45
State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4 MO 314-205 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-220 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro M MO 314-275 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-317 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-336 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. CREVECOEUR OLVEMO01DS0 STL MCA Metro M MO 314-354 6483 TSR WIRELESS LLC CREVECOEUR OVLDMOBZ1MD STL MCA Metro M MO 314-392 7666 INTERMEDIA COMMUNICATIONS INC. - MO CREVECOEUR STLSMO27RS3 STL MCA Metro M MO 314-415 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-434 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-439 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-445 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO CREVECOEUR STLUMO06DS1 STL MCA Metro M MO 314-453 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-467 3430 PRISM MISSOURI OPERATIONS, LLC - MO CREVECOEUR STLTMOPCDS0 STL MCA Metro M MO 314-469 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-485 4142 TELIGENT, INC. - MO CREVECOEUR STLSMOZCH17 STL MCA Metro M MO 314-486 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro M MO 314-514 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-515 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO07DSA STL MCA Metro M MO 314-523 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-529 9533 SOUTHWESTERN BELL CREVECOEUR TWACMOABRS4 STL MCA Metro M MO 314-542 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-548 7421 AT&T LOCAL CREVECOEUR STLSMO09DS1 STL MCA Metro M MO 314-568 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro M MO 314-575 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro M MO 314-576 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-579 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-581 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro M MO 314-582 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-585 6483 TSR WIRELESS LLC CREVECOEUR OVLDMOBZ1MD STL MCA Metro M MO 314-590 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO CREVECOEUR STLSMOGZDS0 STL MCA Metro M MO 314-594 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO CREVECOEUR STLUMOBN2MD STL MCA Metro M MO 314-628 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M MO 314-639 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO CREVECOEUR STLSMO059MD STL MCA Metro M MO 314-674 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M 1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes. MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA) NOTES: 4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder. Please forward any changes to: [email protected] 2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers. 3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers. Page 1 of 45 Last Updated: 10/11/2001

MISSOURI NPA-NXXs in the METROPOLITAN … npa-nxxs in the metropolitan calling area (mca) ... mo 314-775 4891 gabriel communications of missouri, inc. kirkwood olvemo01ds0 stl mca

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State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

MO 314-205 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-220 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-275 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-317 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-336 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. CREVECOEUR OLVEMO01DS0 STL MCA Metro MMO 314-354 6483 TSR WIRELESS LLC CREVECOEUR OVLDMOBZ1MD STL MCA Metro MMO 314-392 7666 INTERMEDIA COMMUNICATIONS INC. - MO CREVECOEUR STLSMO27RS3 STL MCA Metro MMO 314-415 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-434 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-439 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-445 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO CREVECOEUR STLUMO06DS1 STL MCA Metro MMO 314-453 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-467 3430 PRISM MISSOURI OPERATIONS, LLC - MO CREVECOEUR STLTMOPCDS0 STL MCA Metro MMO 314-469 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-485 4142 TELIGENT, INC. - MO CREVECOEUR STLSMOZCH17 STL MCA Metro MMO 314-486 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-514 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-515 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO07DSA STL MCA Metro MMO 314-523 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-529 9533 SOUTHWESTERN BELL CREVECOEUR TWACMOABRS4 STL MCA Metro MMO 314-542 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-548 7421 AT&T LOCAL CREVECOEUR STLSMO09DS1 STL MCA Metro MMO 314-568 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-575 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-576 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-579 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-581 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-582 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-585 6483 TSR WIRELESS LLC CREVECOEUR OVLDMOBZ1MD STL MCA Metro MMO 314-590 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO CREVECOEUR STLSMOGZDS0 STL MCA Metro MMO 314-594 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO CREVECOEUR STLUMOBN2MD STL MCA Metro MMO 314-628 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-639 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO CREVECOEUR STLSMO059MD STL MCA Metro MMO 314-674 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro M

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

Page 1 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-676 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-682 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS CREVECOEUR CRVCMOGMDS0 STL MCA Metro MMO 314-713 6232 NEXTEL COMMUNICATIONS CREVECOEUR STLVMOMP1MD STL MCA Metro MMO 314-720 8508 WINSTAR WIRELESS, INC. - MO CREVECOEUR CRVCMOEXDS0 STL MCA Metro MMO 314-744 8665 BIRCH TELECOM OF MISSOURI, INC. CREVECOEUR MRHGMO02DS0 STL MCA Metro MMO 314-745 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO CREVECOEUR HVTRMOBA00W STL MCA Metro MMO 314-786 3049 ALLEGIANCE TELECOM, INC. - MO CREVECOEUR STLSMOWQDS0 STL MCA Metro MMO 314-819 7432 WORLDCOM TECHNOLOGIES, INC. - MO CREVECOEUR STLTMOBODS1 STL MCA Metro MMO 314-834 6483 TSR WIRELESS LLC CREVECOEUR OVLDMOBZ1MD STL MCA Metro MMO 314-844 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-851 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-878 9533 SOUTHWESTERN BELL CREVECOEUR STLSMO27DS0 STL MCA Metro MMO 314-985 4774 XO MISSOURI, INC. CREVECOEUR MRHGMOGYDS0 STL MCA Metro MMO 314-210 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-223 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-238 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO KIRKWOOD STLSMOGZDS0 STL MCA Metro MMO 314-274 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO KIRKWOOD STLSMO059MD STL MCA Metro MMO 314-277 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-288 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS KIRKWOOD CRVCMOGMDS0 STL MCA Metro MMO 314-315 8665 BIRCH TELECOM OF MISSOURI, INC. KIRKWOOD MRHGMO02DS0 STL MCA Metro MMO 314-401 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-402 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-420 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-455 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO KIRKWOOD HVTRMOBA00W STL MCA Metro MMO 314-471 7666 INTERMEDIA COMMUNICATIONS INC. - MO KIRKWOOD KRWDMO01RS0 STL MCA Metro MMO 314-488 4142 TELIGENT, INC. - MO KIRKWOOD STLSMOZCH17 STL MCA Metro MMO 314-520 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-540 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-541 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-550 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-560 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-570 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-578 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-596 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO KIRKWOOD STLUMOBN2MD STL MCA Metro M

Page 2 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-602 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-603 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-604 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-605 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-606 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-607 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-608 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-609 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-620 7421 AT&T LOCAL KIRKWOOD CRVCMOAT3MD STL MCA Metro MMO 314-623 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-630 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-640 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-650 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-660 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-666 SOUTHWESTERN BELL KIRKWOOD STL MCA Metro MMO 314-691 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-698 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO KIRKWOOD STLUMO06DS1 STL MCA Metro MMO 314-775 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. KIRKWOOD OLVEMO01DS0 STL MCA Metro MMO 314-779 4774 XO MISSOURI, INC. KIRKWOOD MRHGMOGYDS0 STL MCA Metro MMO 314-795 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-799 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-800 7432 WORLDCOM TECHNOLOGIES, INC. - MO KIRKWOOD STLTMOBODS1 STL MCA Metro MMO 314-803 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-805 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-806 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-807 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-808 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-809 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-821 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-822 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-835 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-852 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-856 3049 ALLEGIANCE TELECOM, INC. - MO KIRKWOOD STLSMOWQDS0 STL MCA Metro MMO 314-909 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro M

Page 3 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-952 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-954 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-957 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-960 6029 SWB MOBILE SYSTEMS KIRKWOOD MNCHMOAQ2MD STL MCA Metro MMO 314-965 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-966 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-971 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-974 6029 SWB MOBILE SYSTEMS KIRKWOOD STLSMOMV1MD STL MCA Metro MMO 314-984 9533 SOUTHWESTERN BELL KIRKWOOD STLSMO41CG0 STL MCA Metro MMO 314-209 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-212 9533 SOUTHWESTERN BELL LADUE STLSMO01RS1 STL MCA Metro MMO 314-213 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-214 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-215 9533 SOUTHWESTERN BELL LADUE MNCHMO59RS2 STL MCA Metro MMO 314-216 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-218 9533 SOUTHWESTERN BELL LADUE STCHMO63RS2 STL MCA Metro MMO 314-219 9533 SOUTHWESTERN BELL LADUE HVTRMO65RS4 STL MCA Metro MMO 314-222 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-232 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-233 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-234 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-239 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM1 STL MCA Metro MMO 314-246 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-249 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-252 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-253 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-264 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-265 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-266 4142 TELIGENT, INC. - MO LADUE STLSMOZCH17 STL MCA Metro MMO 314-276 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-283 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-291 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-292 7421 AT&T LOCAL LADUE CRVCMOAT3MD STL MCA Metro MMO 314-294 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro M

Page 4 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-298 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-301 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-302 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-303 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-304 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-306 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-307 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-308 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOAB1MD STL MCA Metro MMO 314-313 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-316 9533 SOUTHWESTERN BELL LADUE FNTNMO54RS2 STL MCA Metro MMO 314-322 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-323 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-324 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-330 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-341 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-344 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-346 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-348 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-355 9533 SOUTHWESTERN BELL LADUE STLSMO45DSA STL MCA Metro MMO 314-357 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO LADUE STLSMO059MD STL MCA Metro MMO 314-359 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-360 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-363 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-365 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-368 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-369 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-372 7666 INTERMEDIA COMMUNICATIONS INC. - MO LADUE STLSMO21RS2 STL MCA Metro MMO 314-373 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO LADUE STLUMO06DS1 STL MCA Metro MMO 314-374 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-378 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOAB1MD STL MCA Metro MMO 314-387 7666 INTERMEDIA COMMUNICATIONS INC. - MO LADUE STLSMO42RS3 STL MCA Metro MMO 314-388 9533 SOUTHWESTERN BELL LADUE STLSMO24CG0 STL MCA Metro MMO 314-397 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-400 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro M

Page 5 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-404 6630 ARCH PAGING INC. LADUE CRVCMOBP4MD STL MCA Metro MMO 314-406 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM2 STL MCA Metro MMO 314-407 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-409 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOAB1MD STL MCA Metro MMO 314-412 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-413 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-414 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-419 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-422 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM2 STL MCA Metro MMO 314-423 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-424 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-426 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-427 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-428 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-429 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-432 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-438 9533 SOUTHWESTERN BELL LADUE STLSMO45DSA STL MCA Metro MMO 314-440 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-442 4774 XO MISSOURI, INC. LADUE MRHGMOGYDS0 STL MCA Metro MMO 314-443 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-447 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO LADUE STLSMOGZDS0 STL MCA Metro MMO 314-463 3430 PRISM MISSOURI OPERATIONS, LLC - MO LADUE STLTMOPCDS0 STL MCA Metro MMO 314-468 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-473 7666 INTERMEDIA COMMUNICATIONS INC. - MO LADUE STLSMO23RS5 STL MCA Metro MMO 314-475 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO LADUE HVTRMOBA00W STL MCA Metro MMO 314-477 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-479 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-482 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-484 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-490 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-491 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-493 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-494 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-495 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro M

Page 6 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-496 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-497 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-498 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-503 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-504 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-506 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-507 6630 ARCH PAGING INC. LADUE STLSMO21DS3 STL MCA Metro MMO 314-513 7432 WORLDCOM TECHNOLOGIES, INC. - MO LADUE STLTMOBODS1 STL MCA Metro MMO 314-517 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-518 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-521 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-522 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-524 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-527 8508 WINSTAR WIRELESS, INC. - MO LADUE CRVCMOEXDS0 STL MCA Metro MMO 314-538 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-551 9533 SOUTHWESTERN BELL LADUE STLSMO43CG0 STL MCA Metro MMO 314-562 7421 AT&T LOCAL LADUE CRVCMOAT3MD STL MCA Metro MMO 314-563 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-564 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-567 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-569 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-580 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-587 9533 SOUTHWESTERN BELL LADUE STLSMO21DS4 STL MCA Metro MMO 314-591 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-592 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-593 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-595 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-598 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-610 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-619 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-624 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-625 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-637 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-642 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro M

Page 7 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-643 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LADUE STLUMOBN2MD STL MCA Metro MMO 314-651 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM2 STL MCA Metro MMO 314-653 9533 SOUTHWESTERN BELL LADUE STLSMO45DSA STL MCA Metro MMO 314-654 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-656 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-662 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-683 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-684 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-687 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-692 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-693 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-694 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-699 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-702 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-703 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-704 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-705 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-706 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-707 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-708 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-709 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-712 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-715 9533 SOUTHWESTERN BELL LADUE STLSMO05RS2 STL MCA Metro MMO 314-716 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-718 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-724 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM1 STL MCA Metro MMO 314-731 9533 SOUTHWESTERN BELL LADUE STLSMO43CG0 STL MCA Metro MMO 314-734 6000 AMERITECH MOBILE COMMUNICATIONS, INC. LADUE STLSMOYQ5MD STL MCA Metro MMO 314-738 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-739 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-740 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-741 9533 SOUTHWESTERN BELL LADUE STLSMO45DSA STL MCA Metro MMO 314-743 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. LADUE OLVEMO01DS0 STL MCA Metro MMO 314-749 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro M

Page 8 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-750 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-753 6010 AT&T WIRELESS SERVICES, INC. LADUE NWTPMOABCM2 STL MCA Metro MMO 314-757 6529 VOICESTREAM WIRELESS CORPORATION LADUE STLVMOOH1MD STL MCA Metro MMO 314-761 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-764 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-770 9533 SOUTHWESTERN BELL LADUE STLSMO42CG0 STL MCA Metro MMO 314-774 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-777 9533 SOUTHWESTERN BELL LADUE STLSMO20DSA STL MCA Metro MMO 314-780 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-785 3049 ALLEGIANCE TELECOM, INC. - MO LADUE STLSMOWQDS0 STL MCA Metro MMO 314-787 4774 XO MISSOURI, INC. LADUE MRHGMOGYDS0 STL MCA Metro MMO 314-790 6321 AIRTOUCH PAGING - MISSOURI LADUE STLSMO23CG0 STL MCA Metro MMO 314-791 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-792 7666 INTERMEDIA COMMUNICATIONS INC. - MO LADUE STLSMO26RS4 STL MCA Metro MMO 314-801 7432 WORLDCOM TECHNOLOGIES, INC. - MO LADUE STLTMOBODS1 STL MCA Metro MMO 314-804 6630 ARCH PAGING INC. LADUE STLSMO23CG0 STL MCA Metro MMO 314-810 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-812 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-813 7432 WORLDCOM TECHNOLOGIES, INC. - MO LADUE STLTMOBODS1 STL MCA Metro MMO 314-817 7432 WORLDCOM TECHNOLOGIES, INC. - MO LADUE STLTMOBODS1 STL MCA Metro MMO 314-824 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS LADUE CRVCMOGMDS0 STL MCA Metro MMO 314-827 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-830 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-831 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-833 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-837 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-838 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-839 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-853 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-866 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-867 9533 SOUTHWESTERN BELL LADUE STLSMO24CG0 STL MCA Metro MMO 314-868 9533 SOUTHWESTERN BELL LADUE STLSMO24CG0 STL MCA Metro MMO 314-869 9533 SOUTHWESTERN BELL LADUE STLSMO24CG0 STL MCA Metro MMO 314-870 6630 ARCH PAGING INC. LADUE STLSMO23CG0 STL MCA Metro M

Page 9 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-872 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-873 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-874 4774 XO MISSOURI, INC. LADUE MRHGMOGYDS0 STL MCA Metro MMO 314-882 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-890 9533 SOUTHWESTERN BELL LADUE STLSMO23CG0 STL MCA Metro MMO 314-895 9533 SOUTHWESTERN BELL LADUE STLSMO43CG0 STL MCA Metro MMO 314-897 8665 BIRCH TELECOM OF MISSOURI, INC. LADUE MRHGMO02DS0 STL MCA Metro MMO 314-910 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-913 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-914 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-915 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-917 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-918 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-919 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-920 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-921 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-922 6664 SPRINT SPECTRUM L.P. LADUE MRHGMOCJCM0 STL MCA Metro MMO 314-934 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-941 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-943 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-953 9533 SOUTHWESTERN BELL LADUE STLSMO45DSA STL MCA Metro MMO 314-956 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-961 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-962 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-963 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-964 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-967 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-968 9533 SOUTHWESTERN BELL LADUE STLSMO26DSA STL MCA Metro MMO 314-972 9533 SOUTHWESTERN BELL LADUE STLSMO40CG0 STL MCA Metro MMO 314-973 6332 AMERITECH CELLULAR SERVICES LADUE STLSMOYQ3MD STL MCA Metro MMO 314-981 6630 ARCH PAGING INC. LADUE STLSMO21DS3 STL MCA Metro MMO 314-983 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-989 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-991 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro M

Page 10 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-993 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-994 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-995 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-996 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-997 9533 SOUTHWESTERN BELL LADUE STLSMO21DS3 STL MCA Metro MMO 314-225 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO MEHLVILLE HVTRMOBA00W STL MCA Metro MMO 314-227 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO MEHLVILLE STLUMO06DS1 STL MCA Metro MMO 314-329 8665 BIRCH TELECOM OF MISSOURI, INC. MEHLVILLE MRHGMO02DS0 STL MCA Metro MMO 314-416 9533 SOUTHWESTERN BELL MEHLVILLE STLSMO22DS0 STL MCA Metro MMO 314-433 4774 XO MISSOURI, INC. MEHLVILLE MRHGMOGYDS0 STL MCA Metro MMO 314-449 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO MEHLVILLE STLSMOGZDS0 STL MCA Metro MMO 314-451 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO MEHLVILLE STLSMO059MD STL MCA Metro MMO 314-487 9533 SOUTHWESTERN BELL MEHLVILLE STLSMO22DS0 STL MCA Metro MMO 314-649 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS MEHLVILLE CRVCMOGMDS0 STL MCA Metro MMO 314-675 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO MEHLVILLE STLUMOBN2MD STL MCA Metro MMO 314-714 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. MEHLVILLE OLVEMO01DS0 STL MCA Metro MMO 314-782 7666 INTERMEDIA COMMUNICATIONS INC. - MO MEHLVILLE STLSMO22RS4 STL MCA Metro MMO 314-815 3049 ALLEGIANCE TELECOM, INC. - MO MEHLVILLE STLSMOWQDS0 STL MCA Metro MMO 314-845 9533 SOUTHWESTERN BELL MEHLVILLE STLSMO22DS0 STL MCA Metro MMO 314-885 7432 WORLDCOM TECHNOLOGIES, INC. - MO MEHLVILLE STLTMOBODS1 STL MCA Metro MMO 314-892 9533 SOUTHWESTERN BELL MEHLVILLE STLSMO22DS0 STL MCA Metro MMO 314-894 9533 SOUTHWESTERN BELL MEHLVILLE STLSMO22DS0 STL MCA Metro MMO 314-293 9533 SOUTHWESTERN BELL OAKVILLE STLSMO22DS0 STL MCA Metro MMO 314-334 3049 ALLEGIANCE TELECOM, INC. - MO OAKVILLE STLSMOWQDS0 STL MCA Metro MMO 314-375 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. OAKVILLE OLVEMO01DS0 STL MCA Metro MMO 314-380 8665 BIRCH TELECOM OF MISSOURI, INC. OAKVILLE MRHGMO02DS0 STL MCA Metro MMO 314-452 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO OAKVILLE STLUMO06DS1 STL MCA Metro MMO 314-478 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO OAKVILLE STLSMOGZDS0 STL MCA Metro MMO 314-549 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO OAKVILLE STLUMOBN2MD STL MCA Metro MMO 314-556 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO OAKVILLE STLSMO059MD STL MCA Metro MMO 314-825 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO OAKVILLE HVTRMOBA00W STL MCA Metro MMO 314-846 9533 SOUTHWESTERN BELL OAKVILLE STLSMO22DS0 STL MCA Metro MMO 636-558 525 NAVIGATOR TELECOMMUNICATIONS, LLC - MO OFALLON OFLLMO01DS0 STL MCA Metro MMO 636-696 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS OFALLON CRVCMOGMDS0 STL MCA Metro M

Page 11 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-853 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO OFALLON WNVLMOXASMD STL MCA Metro MMO 314-248 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO SAPPINGTON STLSMOGZDS0 STL MCA Metro MMO 314-270 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS SAPPINGTON CRVCMOGMDS0 STL MCA Metro MMO 314-272 7666 INTERMEDIA COMMUNICATIONS INC. - MO SAPPINGTON STLSMO25RS5 STL MCA Metro MMO 314-282 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO SAPPINGTON HVTRMOBA00W STL MCA Metro MMO 314-364 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-431 4774 XO MISSOURI, INC. SAPPINGTON MRHGMOGYDS0 STL MCA Metro MMO 314-472 3049 ALLEGIANCE TELECOM, INC. - MO SAPPINGTON STLSMOWQDS0 STL MCA Metro MMO 314-525 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-543 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-635 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO SAPPINGTON STLUMOBN2MD STL MCA Metro MMO 314-690 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS SAPPINGTON CRVCMOGMDS0 STL MCA Metro MMO 314-722 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. SAPPINGTON OLVEMO01DS0 STL MCA Metro MMO 314-728 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO SAPPINGTON STLSMO059MD STL MCA Metro MMO 314-729 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-730 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-748 7432 WORLDCOM TECHNOLOGIES, INC. - MO SAPPINGTON STLTMOBODS1 STL MCA Metro MMO 314-756 8665 BIRCH TELECOM OF MISSOURI, INC. SAPPINGTON MRHGMO02DS0 STL MCA Metro MMO 314-842 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-843 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-849 9533 SOUTHWESTERN BELL SAPPINGTON STLSMO25DSA STL MCA Metro MMO 314-864 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO SAPPINGTON STLUMO06DS1 STL MCA Metro MMO 314-204 6385 WEBLINK WIRELESS, INC. ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-206 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-208 6385 WEBLINK WIRELESS, INC. ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-221 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO ST LOUIS STLUMO06DS0 STL MCA Metro MMO 314-224 6385 WEBLINK WIRELESS, INC. ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-226 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO ST LOUIS STLSMO059MD STL MCA Metro MMO 314-229 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-231 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-235 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-236 7666 INTERMEDIA COMMUNICATIONS INC. - MO ST LOUIS STLSMOXTDS0 STL MCA Metro MMO 314-241 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-242 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro M

Page 12 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-243 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-244 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-245 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-247 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-254 8684 SAINT LOUIS PAGING NETWORK, INC. ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-255 4774 XO MISSOURI, INC. ST LOUIS MRHGMOGYDS2 STL MCA Metro MMO 314-259 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-260 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02RS1 STL MCA Metro MMO 314-261 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-263 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02RS1 STL MCA Metro MMO 314-267 6232 NEXTEL COMMUNICATIONS ST LOUIS STLVMOMP1MD STL MCA Metro MMO 314-268 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-269 8508 WINSTAR WIRELESS, INC. - MO ST LOUIS CRVCMOEXDS0 STL MCA Metro MMO 314-280 6232 NEXTEL COMMUNICATIONS ST LOUIS STLVMOMP1MD STL MCA Metro MMO 314-284 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-286 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-289 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-290 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-300 3437 CCCMO, INC., DBA CONNECT! ST LOUIS STLSMOGZDS2 STL MCA Metro MMO 314-318 6630 ARCH PAGING INC. ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-321 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05321 STL MCA Metro MMO 314-325 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-331 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-333 8665 BIRCH TELECOM OF MISSOURI, INC. ST LOUIS MRHGMO02DS0 STL MCA Metro MMO 314-335 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-340 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-342 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-345 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-351 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-352 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-353 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-361 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-362 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-367 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro M

Page 13 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-370 8684 SAINT LOUIS PAGING NETWORK, INC. ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-371 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-381 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-382 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-383 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-384 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO ST LOUIS STLUMO06DS1 STL MCA Metro MMO 314-385 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-389 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-393 6232 NEXTEL COMMUNICATIONS ST LOUIS STLVMOMP1MD STL MCA Metro MMO 314-398 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-408 6589 SOURCE ONE WIRELESS ST LOUIS STLSMOZCXIZ STL MCA Metro MMO 314-418 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-421 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-425 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-430 6630 ARCH PAGING INC. ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-435 6029 SWB MOBILE SYSTEMS ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-436 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-444 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-446 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. ST LOUIS OLVEMO01DS0 STL MCA Metro MMO 314-450 7421 AT&T LOCAL ST LOUIS STLSMO09DS1 STL MCA Metro MMO 314-454 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-457 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-460 6630 ARCH PAGING INC. ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-462 3430 PRISM MISSOURI OPERATIONS, LLC - MO ST LOUIS STLTMOPCDS0 STL MCA Metro MMO 314-465 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-466 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-474 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO ST LOUIS HVTRMOBA00W STL MCA Metro MMO 314-480 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-481 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-483 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-489 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01RS5 STL MCA Metro MMO 314-499 3437 CCCMO, INC., DBA CONNECT! ST LOUIS STLSMOGZDS2 STL MCA Metro MMO 314-505 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-508 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro M

Page 14 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-509 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-510 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-512 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-516 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-526 6385 WEBLINK WIRELESS, INC. ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-531 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-533 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-534 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-535 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-537 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-539 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-544 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-545 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-552 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-553 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-554 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-555 9533 SOUTHWESTERN BELL ST LOUIS STLSMO0501T STL MCA Metro MMO 314-558 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO ST LOUIS STLUMOBN2MD STL MCA Metro MMO 314-559 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-565 6232 NEXTEL COMMUNICATIONS ST LOUIS STLVMOMP1MD STL MCA Metro MMO 314-571 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-572 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-574 6232 NEXTEL COMMUNICATIONS ST LOUIS STLVMOMP1MD STL MCA Metro MMO 314-577 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-583 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-588 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-589 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-600 7421 AT&T LOCAL ST LOUIS STLSMO09DS2 STL MCA Metro MMO 314-601 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-612 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-613 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-614 6010 AT&T WIRELESS SERVICES, INC. ST LOUIS NWTPMOAB2MD STL MCA Metro MMO 314-615 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-616 6010 AT&T WIRELESS SERVICES, INC. ST LOUIS NWTPMOAB2MD STL MCA Metro M

Page 15 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-617 6844 METROTEL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-621 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-622 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-629 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-631 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-632 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-633 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-638 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-641 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-644 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-645 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-646 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-647 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-652 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-655 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS ST LOUIS CRVCMOGMDS0 STL MCA Metro MMO 314-657 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS ST LOUIS CRVCMOGMDS0 STL MCA Metro MMO 314-658 9533 SOUTHWESTERN BELL ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-659 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS ST LOUIS CRVCMOGMDS0 STL MCA Metro MMO 314-663 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-664 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-667 4932 LEVEL 3 COMMUNICATIONS, LLC - MO ST LOUIS STLSMOPLDS0 STL MCA Metro MMO 314-670 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-672 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-678 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO ST LOUIS STLSMOGZDS0 STL MCA Metro MMO 314-679 9533 SOUTHWESTERN BELL ST LOUIS STLSMO02CG0 STL MCA Metro MMO 314-680 6529 VOICESTREAM WIRELESS CORPORATION ST LOUIS STLVMOOH1MD STL MCA Metro MMO 314-710 3437 CCCMO, INC., DBA CONNECT! ST LOUIS STLSMOGZDS2 STL MCA Metro MMO 314-719 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-721 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-723 3375 KMC TELECOM III, INC. - MO ST LOUIS STLSMOZCX7Z STL MCA Metro MMO 314-725 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-726 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-727 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-732 4142 TELIGENT, INC. - MO ST LOUIS STLSMOZCH17 STL MCA Metro M

Page 16 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-746 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-747 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-751 6521 METROCALL ST LOUIS STLSMO05K11 STL MCA Metro MMO 314-752 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-754 4774 XO MISSOURI, INC. ST LOUIS MRHGMOGYDS0 STL MCA Metro MMO 314-758 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-762 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-763 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-765 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-766 4142 TELIGENT, INC. - MO ST LOUIS STLSMOZCX6Y STL MCA Metro MMO 314-767 9533 SOUTHWESTERN BELL ST LOUIS STLSMO11DSA STL MCA Metro MMO 314-768 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-769 3375 KMC TELECOM III, INC. - MO ST LOUIS STLSMOZC01W STL MCA Metro MMO 314-771 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-772 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-773 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-776 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-781 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-783 3049 ALLEGIANCE TELECOM, INC. - MO ST LOUIS STLSMOWQDS0 STL MCA Metro MMO 314-788 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-794 SOUTHWESTERN BELL ST LOUIS STL MCA Metro MMO 314-802 7432 WORLDCOM TECHNOLOGIES, INC. - MO ST LOUIS STLTMOBODS0 STL MCA Metro MMO 314-814 7432 WORLDCOM TECHNOLOGIES, INC. - MO ST LOUIS STLTMOBODS0 STL MCA Metro MMO 314-823 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-826 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-829 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-832 9533 SOUTHWESTERN BELL ST LOUIS STLSMO03CG0 STL MCA Metro MMO 314-836 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-840 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-841 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-847 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-848 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-850 6630 ARCH PAGING INC. ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-854 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro M

Page 17 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-855 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-858 6035 ST LOUIS ELECTRONICS COMMICATIONS CORP ST LOUIS STLSMO05CG0 STL MCA Metro MMO 314-862 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-863 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-865 9533 SOUTHWESTERN BELL ST LOUIS STLSMO08CG0 STL MCA Metro MMO 314-871 6412 AMERITECH CELLULAR SERVICES - MISSOURI ST LOUIS STLSMOYQ5MD STL MCA Metro MMO 314-875 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-876 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-877 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-879 9533 SOUTHWESTERN BELL ST LOUIS STLSMO04CG0 STL MCA Metro MMO 314-880 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-881 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-883 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-884 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-886 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-887 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-888 7102 DIGITAL TELEPORT, INC. ST LOUIS MRHGMOQADS1 STL MCA Metro MMO 314-889 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-898 7432 WORLDCOM TECHNOLOGIES, INC. - MO ST LOUIS STLTMOBODS1 STL MCA Metro MMO 314-900 3437 CCCMO, INC., DBA CONNECT! ST LOUIS STLSMOGZDS2 STL MCA Metro MMO 314-902 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-903 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-904 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-905 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-906 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-907 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-908 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-912 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-923 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-924 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-927 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-929 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-933 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-935 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro M

Page 18 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 314-945 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-951 9533 SOUTHWESTERN BELL ST LOUIS STLSMO06CG0 STL MCA Metro MMO 314-955 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-969 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSC STL MCA Metro MMO 314-977 9533 SOUTHWESTERN BELL ST LOUIS STLSMO07DSA STL MCA Metro MMO 314-979 3437 CCCMO, INC., DBA CONNECT! ST LOUIS STLSMOGZDS2 STL MCA Metro MMO 314-982 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-986 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-988 6630 ARCH PAGING INC. ST LOUIS STLSMO07CG0 STL MCA Metro MMO 314-990 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 314-992 9533 SOUTHWESTERN BELL ST LOUIS STLSMO01DSA STL MCA Metro MMO 314-999 6381 PAGENET ST LOUIS STLSMO01XAZ STL MCA Metro MMO 636-555 9533 SOUTHWESTERN BELL ST LOUIS STLSMO0501T STL MCA Metro MMO 636-228 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) AUGUSTA AGSTMOXARS0 STL MCA 5MO 636-482 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) AUGUSTA AGSTMOXARS0 STL MCA 5 YMO 636-274 9533 SOUTHWESTERN BELL CEDAR HILL CDHLMO51RS0 STL MCA 5 YMO 636-285 9533 SOUTHWESTERN BELL CEDAR HILL CDHLMO51RS0 STL MCA 5MO 636-337 9533 SOUTHWESTERN BELL DE SOTO DESTMOGIRS0 STL MCA 5 YMO 636-586 9533 SOUTHWESTERN BELL DE SOTO DESTMOGIRS0 STL MCA 5MO 636-798 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) DEFIANCE DFNCMOXARS0 STL MCA 5 YMO 636-987 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) DEFIANCE DFNCMOXARS0 STL MCA 5MO 636-251 6332 AMERITECH CELLULAR SERVICES FORISTELL DRDNMOAA1MD STL MCA 5MO 636-459 6332 AMERITECH CELLULAR SERVICES FORISTELL DRDNMOAA1MD STL MCA 5MO 636-463 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) FORISTELL FRSTMOXARS0 STL MCA 5 YMO 636-673 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) FORISTELL FRSTMOXARS0 STL MCA 5MO 636-682 6483 TSR WIRELESS LLC FSSCRSTLCY OVLDMOBZ1MD STL MCA 5MO 636-931 9533 SOUTHWESTERN BELL FSSCRSTLCY FSTSMOYEDS0 STL MCA 5 YMO 636-933 9533 SOUTHWESTERN BELL FSSCRSTLCY FSTSMOYEDS0 STL MCA 5MO 636-937 9533 SOUTHWESTERN BELL FSSCRSTLCY FSTSMOYEDS0 STL MCA 5MO 636-451 9533 SOUTHWESTERN BELL GRAYSUMMIT GRSMMO55RS2 STL MCA 5 YMO 636-742 9533 SOUTHWESTERN BELL GRAYSUMMIT GRSMMO55RS2 STL MCA 5MO 636-345 7666 INTERMEDIA COMMUNICATIONS INC. - MO HARVESTER HVTRMO67RS4 STL MCA 5MO 636-789 9533 SOUTHWESTERN BELL HILLSBORO HLBOMO66RS1 STL MCA 5MO 636-797 9533 SOUTHWESTERN BELL HILLSBORO HLBOMO66RS1 STL MCA 5 Y

Page 19 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-356 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) MOSCOW ML MSMLMOXARS0 STL MCA 5MO 636-366 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) MOSCOW ML MSMLMOXARS0 STL MCA 5 YMO 636-398 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) NEW MELLE NWMLMOXARS0 STL MCA 5 YMO 636-828 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) NEW MELLE NWMLMOXARS0 STL MCA 5MO 636-661 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OLD MONROE OLMRMOXARLA STL MCA 5 YMO 636-665 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OLD MONROE OLMRMOXARLA STL MCA 5MO 636-257 9533 SOUTHWESTERN BELL PACIFIC PCFCMO61RS0 STL MCA 5MO 636-271 9533 SOUTHWESTERN BELL PACIFIC PCFCMO61RS0 STL MCA 5 YMO 636-295 6332 AMERITECH CELLULAR SERVICES TROY DRDNMOAA1MD STL MCA 5MO 636-358 6029 SWB MOBILE SYSTEMS TROY MNCHMOAQ1MD STL MCA 5MO 636-462 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) TROY TROYMOXADS0 STL MCA 5 YMO 636-528 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) TROY TROYMOXADS0 STL MCA 5MO 636-452 9533 SOUTHWESTERN BELL WARE WAREMOWHRS0 STL MCA 5 YMO 636-944 9533 SOUTHWESTERN BELL WARE WAREMOWHRS0 STL MCA 5MO 636-327 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) WENTZVILLE WNVLMOXADS0 STL MCA 5MO 636-332 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) WENTZVILLE WNVLMOXADS0 STL MCA 5 YMO 636-357 6029 SWB MOBILE SYSTEMS WENTZVILLE MNCHMOAQ1MD STL MCA 5MO 636-497 6529 VOICESTREAM WIRELESS CORPORATION WENTZVILLE STLVMOOH1MD STL MCA 5MO 636-538 6529 VOICESTREAM WIRELESS CORPORATION WENTZVILLE STLVMOOH1MD STL MCA 5MO 636-639 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) WENTZVILLE WNVLMOXADS0 STL MCA 5MO 636-679 6529 VOICESTREAM WIRELESS CORPORATION WENTZVILLE STLVMOOH1MD STL MCA 5MO 636-698 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS WENTZVILLE CRVCMOGMDS0 STL MCA 5MO 636-841 6529 VOICESTREAM WIRELESS CORPORATION WENTZVILLE STLVMOOH1MD STL MCA 5MO 636-566 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) WINFIELD WNFDMOXARS0 STL MCA 5 YMO 636-668 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) WINFIELD WNFDMOXARS0 STL MCA 5MO 636-674 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. ANTONIA OLVEMO01DS0 STL MCA 4 YMO 636-942 9533 SOUTHWESTERN BELL ANTONIA ANTOMO50RS2 STL MCA 4 YMO 636-948 9533 SOUTHWESTERN BELL ANTONIA ANTOMO50RS2 STL MCA 4MO 636-534 7666 INTERMEDIA COMMUNICATIONS INC. - MO CHESTERFLD CHFDMO52RS3 STL MCA 4MO 636-561 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) DARDENNE DRDNMOXARS0 STL MCA 4 YMO 636-625 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) DARDENNE DRDNMOXARS0 STL MCA 4MO 636-695 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS DARDENNE CRVCMOGMDS0 STL MCA 4MO 636-549 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. EUREKA OLVEMO01DS0 STL MCA 4 YMO 636-587 9533 SOUTHWESTERN BELL EUREKA EURKMO53RS0 STL MCA 4

Page 20 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-755 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO EUREKA STLUMO06DS1 STL MCA 4MO 636-938 9533 SOUTHWESTERN BELL EUREKA EURKMO53RS0 STL MCA 4 YMO 816-629 9533 SOUTHWESTERN BELL EXCELSRSPG EXSPMOMERS0 STL MCA 4 YMO 816-630 9533 SOUTHWESTERN BELL EXCELSRSPG EXSPMOMERS0 STL MCA 4 YMO 816-637 9533 SOUTHWESTERN BELL EXCELSRSPG EXSPMOMERS0 STL MCA 4MO 636-229 7666 INTERMEDIA COMMUNICATIONS INC. - MO HARVESTER HVTRMO67RS4 STL MCA 4 YMO 636-300 9533 SOUTHWESTERN BELL HARVESTER HVTRMO65RS3 STL MCA 4 YMO 636-310 6630 ARCH PAGING INC. HARVESTER HVTRMO67DSA STL MCA 4MO 636-312 6630 ARCH PAGING INC. HARVESTER HVTRMO67DSA STL MCA 4MO 636-320 6630 ARCH PAGING INC. HARVESTER HVTRMO67DSA STL MCA 4MO 636-329 9533 SOUTHWESTERN BELL HARVESTER HVTRMO65RS3 STL MCA 4MO 636-336 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO HARVESTER STLSMOGZDS0 STL MCA 4 YMO 636-403 6630 ARCH PAGING INC. HARVESTER CRVCMOBP4MD STL MCA 4MO 636-441 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-442 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-447 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4MO 636-476 6630 ARCH PAGING INC. HARVESTER HVTRMO67DSA STL MCA 4MO 636-477 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-498 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-618 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO HARVESTER STLSMO059MD STL MCA 4MO 636-685 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS HARVESTER CRVCMOGMDS0 STL MCA 4MO 636-720 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. HARVESTER OLVEMO01DS0 STL MCA 4 YMO 636-722 9533 SOUTHWESTERN BELL HARVESTER HVTRMO65RS3 STL MCA 4 YMO 636-769 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO HARVESTER STLUMO06DS1 STL MCA 4MO 636-793 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-794 4774 XO MISSOURI, INC. HARVESTER MRHGMOGYDS0 STL MCA 4 YMO 636-852 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO HARVESTER HVTRMOBA00W STL MCA 4MO 636-922 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4MO 636-926 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-928 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-930 6630 ARCH PAGING INC. HARVESTER HVTRMO67DSA STL MCA 4MO 636-936 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-939 9533 SOUTHWESTERN BELL HARVESTER HVTRMO67DSA STL MCA 4 YMO 636-224 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. HERCUMPVLY OLVEMO01DS0 STL MCA 4 Y

Page 21 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-475 9533 SOUTHWESTERN BELL HERCUMPVLY PVLYMOAARS0 STL MCA 4 YMO 636-479 9533 SOUTHWESTERN BELL HERCUMPVLY PVLYMOAARS0 STL MCA 4MO 636-375 9533 SOUTHWESTERN BELL HIGH RIDGE HGRGMO57RS2 STL MCA 4MO 636-376 9533 SOUTHWESTERN BELL HIGH RIDGE HGRGMO56RS2 STL MCA 4MO 636-671 9533 SOUTHWESTERN BELL HIGH RIDGE HGRGMO57RS2 STL MCA 4 YMO 636-677 9533 SOUTHWESTERN BELL HIGH RIDGE HGRGMO56RS2 STL MCA 4 YMO 636-691 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO HIGH RIDGE STLSMO059MD STL MCA 4MO 636-692 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. HIGH RIDGE OLVEMO01DS0 STL MCA 4 YMO 636-240 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4 YMO 636-272 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4MO 636-281 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4MO 636-379 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4 YMO 636-474 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4 YMO 636-978 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4 YMO 636-980 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OFALLON OFLNMOXADS0 STL MCA 4MO 636-273 9533 SOUTHWESTERN BELL POND PONDMO62RS4 STL MCA 4MO 636-405 9533 SOUTHWESTERN BELL POND PONDMO62RS4 STL MCA 4 YMO 636-458 9533 SOUTHWESTERN BELL POND PONDMO62RS4 STL MCA 4 YMO 636-821 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. POND OLVEMO01DS0 STL MCA 4 YMO 636-834 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO POND STLUMO06DS1 STL MCA 4MO 636-248 6332 AMERITECH CELLULAR SERVICES ST PETERS DRDNMOAA1MD STL MCA 4MO 636-278 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ST PETERS STPRMOXADS1 STL MCA 4MO 636-279 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ST PETERS STPRMOXADS1 STL MCA 4MO 636-397 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ST PETERS STPRMOXADS1 STL MCA 4 YMO 636-485 6332 AMERITECH CELLULAR SERVICES ST PETERS DRDNMOAA1MD STL MCA 4MO 636-576 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO ST PETERS WNVLMOXASMD STL MCA 4MO 636-697 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS ST PETERS CRVCMOGMDS0 STL MCA 4MO 636-970 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ST PETERS STPRMOXADS1 STL MCA 4 YMO 636-237 7666 INTERMEDIA COMMUNICATIONS INC. - MO CHESTERFLD CHFDMO52RS3 STL MCA 3 YMO 636-262 6232 NEXTEL COMMUNICATIONS CHESTERFLD STLVMOMP1MD STL MCA 3MO 636-292 8508 WINSTAR WIRELESS, INC. - MO CHESTERFLD CRVCMOEXDS0 STL MCA 3MO 636-299 7421 AT&T LOCAL CHESTERFLD HLBOMO01DS0 STL MCA 3MO 636-346 6664 SPRINT SPECTRUM L.P. CHESTERFLD MRHGMOCJCM0 STL MCA 3MO 636-350 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO CHESTERFLD STLUMO06DS1 STL MCA 3

Page 22 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-449 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. CHESTERFLD OLVEMO01DS0 STL MCA 3 YMO 636-470 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO CHESTERFLD HVTRMOBA00W STL MCA 3MO 636-489 4142 TELIGENT, INC. - MO CHESTERFLD STLSMOZCH17 STL MCA 3MO 636-519 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-530 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-532 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-536 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3MO 636-537 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-590 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO CHESTERFLD STLUMOBN2MD STL MCA 3 YMO 636-681 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS CHESTERFLD CRVCMOGMDS0 STL MCA 3MO 636-714 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO CHESTERFLD STLSMO059MD STL MCA 3MO 636-728 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-730 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3MO 636-733 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-735 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-736 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3 YMO 636-737 9533 SOUTHWESTERN BELL CHESTERFLD CHFDMO52DSA STL MCA 3MO 636-777 8665 BIRCH TELECOM OF MISSOURI, INC. CHESTERFLD MRHGMO02DS0 STL MCA 3 YMO 636-787 3049 ALLEGIANCE TELECOM, INC. - MO CHESTERFLD STLSMOWQDS0 STL MCA 3MO 636-812 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO CHESTERFLD STLSMOGZDS0 STL MCA 3 YMO 636-858 6035 ST LOUIS ELECTRONICS COMMICATIONS CORP CHESTERFLD STLSMO05CG0 STL MCA 3MO 636-898 4774 XO MISSOURI, INC. CHESTERFLD MRHGMOGYDS0 STL MCA 3 YMO 636-203 7666 INTERMEDIA COMMUNICATIONS INC. - MO FENTON FNTNMO54RS4 STL MCA 3 YMO 636-305 9533 SOUTHWESTERN BELL FENTON FNTNMO54DS0 STL MCA 3 YMO 636-326 9533 SOUTHWESTERN BELL FENTON FNTNMO54DS0 STL MCA 3MO 636-343 9533 SOUTHWESTERN BELL FENTON FNTNMO54DS0 STL MCA 3 YMO 636-349 9533 SOUTHWESTERN BELL FENTON FNTNMO54DS0 STL MCA 3 YMO 636-437 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO FENTON STLUMO06DS1 STL MCA 3MO 636-478 7421 AT&T LOCAL FENTON STLSMO09DS1 STL MCA 3MO 636-492 7666 INTERMEDIA COMMUNICATIONS INC. - MO FENTON FNTNMO54RS4 STL MCA 3 YMO 636-533 4774 XO MISSOURI, INC. FENTON MRHGMOGYDS0 STL MCA 3 YMO 636-554 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO FENTON STLSMOGZDS0 STL MCA 3 YMO 636-588 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO FENTON STLSMO059MD STL MCA 3MO 636-600 8665 BIRCH TELECOM OF MISSOURI, INC. FENTON MRHGMO02DS0 STL MCA 3 Y

Page 23 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-651 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS FENTON CRVCMOGMDS0 STL MCA 3MO 636-678 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO FENTON STLUMOBN2MD STL MCA 3 YMO 636-680 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. FENTON OLVEMO01DS0 STL MCA 3 YMO 636-717 9533 SOUTHWESTERN BELL FENTON FNTNMO54DS0 STL MCA 3MO 636-764 4932 LEVEL 3 COMMUNICATIONS, LLC - MO FENTON STLSMOPLDS0 STL MCA 3MO 636-461 9533 SOUTHWESTERN BELL IMPERIAL IMPRMO58RS2 STL MCA 3 YMO 636-464 9533 SOUTHWESTERN BELL IMPERIAL IMPRMO58RS2 STL MCA 3 YMO 636-467 9533 SOUTHWESTERN BELL IMPERIAL IMPRMO58RS2 STL MCA 3MO 636-500 8665 BIRCH TELECOM OF MISSOURI, INC. IMPERIAL MRHGMO02DS0 STL MCA 3 YMO 636-547 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO IMPERIAL STLUMOBN2MD STL MCA 3 YMO 636-642 4932 LEVEL 3 COMMUNICATIONS, LLC - MO IMPERIAL STLSMOPLDS0 STL MCA 3MO 636-741 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. IMPERIAL OLVEMO01DS0 STL MCA 3 YMO 636-200 8665 BIRCH TELECOM OF MISSOURI, INC. MANCHESTER MRHGMO02DS0 STL MCA 3 YMO 636-207 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-227 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-230 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-238 7666 INTERMEDIA COMMUNICATIONS INC. - MO MANCHESTER MNCHMOBIRS0 STL MCA 3 YMO 636-256 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-386 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-391 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-394 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3 YMO 636-399 6332 AMERITECH CELLULAR SERVICES MANCHESTER STLSMOYQ3MD STL MCA 3MO 636-438 3049 ALLEGIANCE TELECOM, INC. - MO MANCHESTER STLSMOWQDS0 STL MCA 3MO 636-445 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO MANCHESTER STLUMO06DS1 STL MCA 3MO 636-484 6332 AMERITECH CELLULAR SERVICES MANCHESTER STLSMOYQ3MD STL MCA 3MO 636-491 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO MANCHESTER STLSMO059MD STL MCA 3MO 636-527 9533 SOUTHWESTERN BELL MANCHESTER MNCHMO59CG0 STL MCA 3MO 636-552 4932 LEVEL 3 COMMUNICATIONS, LLC - MO MANCHESTER STLSMOPLDS0 STL MCA 3MO 636-557 3049 ALLEGIANCE TELECOM, INC. - MO MANCHESTER STLSMOWQDS0 STL MCA 3MO 636-591 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO MANCHESTER STLSMOGZDS0 STL MCA 3 YMO 636-594 4774 XO MISSOURI, INC. MANCHESTER MRHGMOGYDS0 STL MCA 3 YMO 636-599 7666 INTERMEDIA COMMUNICATIONS INC. - MO MANCHESTER MNCHMOBIRS0 STL MCA 3MO 636-628 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO MANCHESTER STLUMOBN2MD STL MCA 3 YMO 636-686 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS MANCHESTER CRVCMOGMDS0 STL MCA 3

Page 24 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-701 6483 TSR WIRELESS LLC MANCHESTER OVLDMOBZ1MD STL MCA 3MO 636-751 6332 AMERITECH CELLULAR SERVICES MANCHESTER STLSMOYQ3MD STL MCA 3MO 636-779 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. MANCHESTER OLVEMO01DS0 STL MCA 3 YMO 636-891 9533 SOUTHWESTERN BELL MANCHESTER STLSMOAARS0 STL MCA 3 YMO 636-893 7432 WORLDCOM TECHNOLOGIES, INC. - MO MANCHESTER STLTMOBODS0 STL MCA 3 NMO 636-282 9533 SOUTHWESTERN BELL MAXVILLE MXVLMO60DSA STL MCA 3 YMO 636-287 9533 SOUTHWESTERN BELL MAXVILLE MXVLMO60DSA STL MCA 3MO 636-296 9533 SOUTHWESTERN BELL MAXVILLE MXVLMO60DSA STL MCA 3 YMO 636-321 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. MAXVILLE OLVEMO01DS0 STL MCA 3 YMO 636-333 8665 BIRCH TELECOM OF MISSOURI, INC. MAXVILLE MRHGMO02DS0 STL MCA 3 YMO 636-354 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO MAXVILLE STLSMO059MD STL MCA 3MO 636-363 6483 TSR WIRELESS LLC MAXVILLE OVLDMOBZ1MD STL MCA 3MO 636-548 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO MAXVILLE STLUMOBN2MD STL MCA 3 YMO 636-250 1934 ORCHARD FARM ORCHARD FARM ORCHMOXADSO STL MCA 3 YMO 636-258 1934 ORCHARD FARM ORCHARD FARM ORCHMOXADSO STL MCA 3 NMO 636-400 8665 BIRCH TELECOM OF MISSOURI, INC. PORTAGSIUX MRHGMO02DS0 STL MCA 3 YMO 636-425 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. PORTAGSIUX OLVEMO01DS0 STL MCA 3 YMO 636-648 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO PORTAGSIUX STLUMOBN2MD STL MCA 3 YMO 636-753 9533 SOUTHWESTERN BELL PORTAGSIUX PRSXMO68RS0 STL MCA 3MO 636-899 9533 SOUTHWESTERN BELL PORTAGSIUX PRSXMO68RS0 STL MCA 3 YMO 636-255 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-328 7666 INTERMEDIA COMMUNICATIONS INC. - MO ST CHARLES STCHMO63RS4 STL MCA 3 YMO 636-347 6483 TSR WIRELESS LLC ST CHARLES OVLDMOBZ1MD STL MCA 3MO 636-352 4932 LEVEL 3 COMMUNICATIONS, LLC - MO ST CHARLES STLSMOPLDS0 STL MCA 3MO 636-410 4774 XO MISSOURI, INC. ST CHARLES MRHGMOGYDS0 STL MCA 3 YMO 636-443 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-448 6010 AT&T WIRELESS SERVICES, INC. ST CHARLES NWTPMOABCM1 STL MCA 3MO 636-455 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO ST CHARLES STLUMO06DS1 STL MCA 3MO 636-542 6010 AT&T WIRELESS SERVICES, INC. ST CHARLES NWTPMOABCM1 STL MCA 3MO 636-573 3049 ALLEGIANCE TELECOM, INC. - MO ST CHARLES STLSMOWQDS0 STL MCA 3MO 636-574 6321 AIRTOUCH PAGING - MISSOURI ST CHARLES OVLDMOAM1MD STL MCA 3MO 636-634 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO ST CHARLES STLUMOBN2MD STL MCA 3 YMO 636-649 7421 AT&T LOCAL ST CHARLES HLBOMO01DS0 STL MCA 3MO 636-669 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO ST CHARLES STLSMOGZDS0 STL MCA 3 Y

Page 25 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 636-688 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS ST CHARLES CRVCMOGMDS0 STL MCA 3MO 636-699 8665 BIRCH TELECOM OF MISSOURI, INC. ST CHARLES MRHGMO02DS0 STL MCA 3 YMO 636-723 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3MO 636-724 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3MO 636-734 6664 SPRINT SPECTRUM L.P. ST CHARLES MRHGMOCJCM0 STL MCA 3MO 636-754 3049 ALLEGIANCE TELECOM, INC. - MO ST CHARLES STLSMOWQDS0 STL MCA 3MO 636-757 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. ST CHARLES OLVEMO01DS0 STL MCA 3 YMO 636-762 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO ST CHARLES STLSMO059MD STL MCA 3MO 636-795 6010 AT&T WIRELESS SERVICES, INC. ST CHARLES NWTPMOABCM1 STL MCA 3MO 636-866 7666 INTERMEDIA COMMUNICATIONS INC. - MO ST CHARLES STCHMO63RS4 STL MCA 3MO 636-896 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-916 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-925 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3MO 636-940 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-946 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-947 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-949 9533 SOUTHWESTERN BELL ST CHARLES STCHMO63DSA STL MCA 3 YMO 636-998 6381 PAGENET ST CHARLES STLSMO21LMD STL MCA 3MO 636-225 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3 YMO 636-226 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3 YMO 636-412 4774 XO MISSOURI, INC. VALLEYPARK MRHGMOGYDS0 STL MCA 3 YMO 636-431 7666 INTERMEDIA COMMUNICATIONS INC. - MO VALLEYPARK VYPKMO64RS4 STL MCA 3 YMO 636-435 7666 INTERMEDIA COMMUNICATIONS INC. - MO VALLEYPARK VYPKMO64RS4 STL MCA 3MO 636-444 8665 BIRCH TELECOM OF MISSOURI, INC. VALLEYPARK MRHGMO02DS0 STL MCA 3 YMO 636-529 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3 YMO 636-541 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO VALLEYPARK STLUMO06DS1 STL MCA 3MO 636-556 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO VALLEYPARK STLUMOBN2MD STL MCA 3 YMO 636-592 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO VALLEYPARK STLSMOGZDS0 STL MCA 3 YMO 636-689 7218 TELEPORT COMMUNICATIONS GROUP - ST. LOUIS VALLEYPARK CRVCMOGMDS0 STL MCA 3MO 636-783 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO VALLEYPARK STLSMO059MD STL MCA 3MO 636-825 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3MO 636-827 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3 YMO 636-861 9533 SOUTHWESTERN BELL VALLEYPARK VYPKMO64DS0 STL MCA 3 YMO 636-923 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. VALLEYPARK OLVEMO01DS0 STL MCA 3 Y

Page 26 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 417-567 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. FAIR GROVE SPFDMO45DS0 Springfield MCA Metro MMO 417-759 9533 SOUTHWESTERN BELL FAIR GROVE FRGVMOPLRS0 Springfield MCA Metro MMO 417-449 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. NIXA SPFDMO45DS0 Springfield MCA Metro MMO 417-724 9533 SOUTHWESTERN BELL NIXA NIXAMOAARS0 Springfield MCA Metro MMO 417-725 9533 SOUTHWESTERN BELL NIXA NIXAMOAARS0 Springfield MCA Metro MMO 417-732 9533 SOUTHWESTERN BELL REPUBLIC RPBLMOPERS0 Springfield MCA Metro MMO 417-735 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. REPUBLIC SPFDMO45DS0 Springfield MCA Metro MMO 417-753 9533 SOUTHWESTERN BELL ROGERSVL RRVLMOPLRS0 Springfield MCA Metro MMO 417-929 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. ROGERSVL SPFDMO45DS0 Springfield MCA Metro MMO 417-224 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-225 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS1 Springfield MCA Metro MMO 417-227 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCRS0 Springfield MCA Metro MMO 417-268 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS1 Springfield MCA Metro MMO 417-269 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS1 Springfield MCA Metro MMO 417-287 6591 TELETOUCH COMMUNICATIONS, INC. SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-343 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP SPRINGFLD SPFDMOMC2MD Springfield MCA Metro MMO 417-353 6232 NEXTEL COMMUNICATIONS SPRINGFLD SPFDMOTLTMD Springfield MCA Metro MMO 417-397 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO SPRINGFLD SPFDMOTLXSX Springfield MCA Metro MMO 417-447 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. SPRINGFLD SPFDMO45DS0 Springfield MCA Metro MMO 417-520 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI SPRINGFLD SPFDMOPYDS0 Springfield MCA Metro MMO 417-521 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI SPRINGFLD SPFDMOPYDS0 Springfield MCA Metro MMO 417-522 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI SPRINGFLD SPFDMOPYDS0 Springfield MCA Metro MMO 417-523 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI SPRINGFLD SPFDMOPYDS0 Springfield MCA Metro MMO 417-536 6313 AIRTOUCH PAGING - KANSAS SPRINGFLD SPFDMOMCMMD Springfield MCA Metro MMO 417-555 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTL02T Springfield MCA Metro MMO 417-575 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-576 7421 AT&T LOCAL SPRINGFLD SPFDMOMCOMD Springfield MCA Metro MMO 417-577 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTL02T Springfield MCA Metro MMO 417-616 7890 AT&T - LOCAL - MO SPRINGFLD SPFDMOTLDS2 Springfield MCA Metro MMO 417-631 3375 KMC TELECOM III, INC. - MO SPRINGFLD SPFDMOTLX0X Springfield MCA Metro MMO 417-633 6521 METROCALL SPRINGFLD JPLNMOMA6MD Springfield MCA Metro MMO 417-653 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO SPRINGFLD SPFEMO06RS0 Springfield MCA Metro MMO 417-655 2870 ALLTEL COMMUNICATIONS, INC. - MO SPRINGFLD SPFDMOKCDS0 Springfield MCA Metro MMO 417-663 6381 PAGENET SPRINGFLD SPFDMOMCPMD Springfield MCA Metro M

Page 27 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 417-693 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-730 SOUTHWESTERN BELL SPRINGFLD Springfield MCA Metro MMO 417-771 6630 ARCH PAGING INC. SPRINGFLD SPFDMOGF1MD Springfield MCA Metro MMO 417-774 6912 ATLAS MOBILFONE INC. SPRINGFLD SPFDMOHC1MD Springfield MCA Metro MMO 417-799 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO SPRINGFLD SPFDMOOSDS0 Springfield MCA Metro MMO 417-818 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-820 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-823 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-824 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-827 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-829 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-830 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-831 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-832 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-833 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTERS0 Springfield MCA Metro MMO 417-834 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-836 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-837 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-838 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-839 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-840 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-841 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-844 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-848 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-849 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-851 2894 MISSOURI TELECOM, INC. SPRINGFLD SPFEMO050MD Springfield MCA Metro MMO 417-860 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-861 6010 AT&T WIRELESS SERVICES, INC. SPRINGFLD JPLNMOAA1MD Springfield MCA Metro MMO 417-862 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-863 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-864 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-865 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-866 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-868 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro M

Page 28 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 417-869 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-872 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-873 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-874 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-875 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCDS1 Springfield MCA Metro MMO 417-877 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-880 6295 ALLTEL MOBILE COMMUNICATIONS, INC. - MISSOURI SPRINGFLD SPFDMOKCCM0 Springfield MCA Metro MMO 417-881 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-882 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-883 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-885 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-886 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-887 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-888 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-889 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-890 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-891 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOTUDS0 Springfield MCA Metro MMO 417-894 8454 SPRINT SPECTRUM L.P.- MO SPRINGFLD SPFDMOBI2MD Springfield MCA Metro MMO 417-895 9533 SOUTHWESTERN BELL SPRINGFLD SPFDMOMCRS0 Springfield MCA Metro MMO 417-897 6385 WEBLINK WIRELESS, INC. SPRINGFLD SPFDMOMCDS0 Springfield MCA Metro MMO 417-923 3375 KMC TELECOM III, INC. - MO SPRINGFLD SPFDMOMCXMD Springfield MCA Metro MMO 417-736 9533 SOUTHWESTERN BELL STRAFFORD STFRMORERS0 Springfield MCA Metro MMO 417-879 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. STRAFFORD SPFDMO45DS0 Springfield MCA Metro MMO 417-685 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. WILLARD SPFDMO45DS0 Springfield MCA Metro MMO 417-742 9533 SOUTHWESTERN BELL WILLARD WLRDMOSHRS0 Springfield MCA Metro MMO 417-323 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. ASH GROVE SPFDMO45DS0 Springfield MCA 2 YMO 417-672 9533 SOUTHWESTERN BELL ASH GROVE ASGVMOORRS0 Springfield MCA 2MO 417-751 9533 SOUTHWESTERN BELL ASH GROVE ASGVMOORRS0 Springfield MCA 2 YMO 417-289 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. BILLINGS SPFDMO45DS0 Springfield MCA 2 YMO 417-695 9533 SOUTHWESTERN BELL BILLINGS BLNGMOMYRS0 Springfield MCA 2MO 417-744 9533 SOUTHWESTERN BELL BILLINGS BLNGMOMYRS0 Springfield MCA 2 YMO 417-221 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. CLEVER SPFDMO45DS0 Springfield MCA 2 YMO 417-583 9533 SOUTHWESTERN BELL CLEVER CLVRMOLURS0 Springfield MCA 2MO 417-743 9533 SOUTHWESTERN BELL CLEVER CLVRMOLURS0 Springfield MCA 2 Y

Page 29 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 417-329 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ELKLAND EKLDMOXARS0 Springfield MCA 2MO 417-933 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) ELKLAND EKLDMOXARS0 Springfield MCA 2 YMO 417-738 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) FORDLAND FRLDMOXADS0 Springfield MCA 2MO 417-767 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) FORDLAND FRLDMOXADS0 Springfield MCA 2 YMO 417-491 1893 CHOCTAW TELEPHONE CO. HALLTOWN HLTWMOXADS0 Springfield MCA 2 YMO 417-749 1893 CHOCTAW TELEPHONE CO. HALLTOWN HLTWMOXADS0 Springfield MCA 2 NMO 417-443 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) HIGHLANDVL HLDVMOXADS0 Springfield MCA 2 YMO 417-587 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) HIGHLANDVL HLDVMOXADS0 Springfield MCA 2MO 417-369 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) HURLEY HRLYMOXARS0 Springfield MCA 2 YMO 417-748 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) HURLEY HRLYMOXARS0 Springfield MCA 2MO 417-242 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. MARIONVL SPFDMO45DS0 Springfield MCA 2 YMO 417-258 9533 SOUTHWESTERN BELL MARIONVL MRNVMOHORS0 Springfield MCA 2 YMO 417-463 9533 SOUTHWESTERN BELL MARIONVL MRNVMOHORS0 Springfield MCA 2MO 417-468 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) MARSHFIELD MRFDMOXADS0 Springfield MCA 2MO 417-757 3375 KMC TELECOM III, INC. - MO MARSHFIELD MRFDMOXAXMD Springfield MCA 2MO 417-859 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) MARSHFIELD MRFDMOXADS0 Springfield MCA 2 YMO 417-376 1885 ALLTEL MISSOURI, INC. MORRISVL MRVLMOXARS0 Springfield MCA 2 YMO 417-756 1885 ALLTEL MISSOURI, INC. MORRISVL MRVLMOXARS0 Springfield MCA 2 NMO 417-485 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OZARK OZRKMOXADS1 Springfield MCA 2MO 417-581 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OZARK OZRKMOXADS1 Springfield MCA 2 YMO 417-582 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) OZARK OZRKMOXADS1 Springfield MCA 2 YMO 417-267 1885 ALLTEL MISSOURI, INC. PLEASAHOPE PLHPMOXARS0 Springfield MCA 2 YMO 417-467 1885 ALLTEL MISSOURI, INC. PLEASAHOPE PLHPMOXARS0 Springfield MCA 2 NMO 417-278 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) SPARTA SPRTMOXADS0 Springfield MCA 2MO 417-634 1922 GTE MIDWEST, INC. - MO (FORMERLY CONTEL) SPARTA SPRTMOXADS0 Springfield MCA 2 YMO 417-367 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. WALNUT GRV SPFDMO45DS0 Springfield MCA 2 YMO 417-788 9533 SOUTHWESTERN BELL WALNUT GRV WLGVMOWYRS0 Springfield MCA 2 YMO 417-994 9533 SOUTHWESTERN BELL WALNUT GRV WLGVMOWYRS0 Springfield MCA 2MO 816-226 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO BELTON LESMMOAH00W KC MCA Metro MMO 816-265 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO BELTON KSCYMOMCDS0 KC MCA Metro MMO 816-318 9533 SOUTHWESTERN BELL BELTON KSCYMO40DS0 KC MCA Metro MMO 816-322 9533 SOUTHWESTERN BELL BELTON KSCYMO40DS0 KC MCA Metro MMO 816-323 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO BELTON KSCYMO03X0Y KC MCA Metro MMO 816-331 9533 SOUTHWESTERN BELL BELTON KSCYMO40DS0 KC MCA Metro M

Page 30 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-348 9533 SOUTHWESTERN BELL BELTON KSCYMO40DS0 KC MCA Metro MMO 816-388 8665 BIRCH TELECOM OF MISSOURI, INC. BELTON KSCYMOSWDS3 KC MCA Metro MMO 816-425 6123 TCG KANSAS CITY, INC. - MO BELTON KSCYMOSWDS4 KC MCA Metro MMO 816-594 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO BELTON KSCYMOECCA0 KC MCA Metro MMO 816-834 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO BELTON KSCYMOMCDC0 KC MCA Metro MMO 816-892 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. BELTON LENXKS02DS0 KC MCA Metro MMO 573-545 9533 SOUTHWESTERN BELL BENTON BNTNMOKIRSC KC MCA Metro MMO 816-220 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-224 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-228 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-229 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-255 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO BLUE SPG LESMMOAH00W KC MCA Metro MMO 816-295 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO BLUE SPG KSCYMOMCDS0 KC MCA Metro MMO 816-359 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO BLUE SPG KSCYMO03X0Y KC MCA Metro MMO 816-427 6123 TCG KANSAS CITY, INC. - MO BLUE SPG KSCYMOSWDS4 KC MCA Metro MMO 816-463 8665 BIRCH TELECOM OF MISSOURI, INC. BLUE SPG KSCYMOSWDS3 KC MCA Metro MMO 816-485 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO BLUE SPG KSCAMO54DS0 KC MCA Metro MMO 816-598 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO BLUE SPG KSCYMOECCA0 KC MCA Metro MMO 816-622 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-655 9533 SOUTHWESTERN BELL BLUE SPG BLSPMOCADS0 KC MCA Metro MMO 816-874 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. BLUE SPG LENXKS02DS0 KC MCA Metro MMO 816-925 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO BLUE SPG KSCYMOMCDC0 KC MCA Metro MMO 816-277 8665 BIRCH TELECOM OF MISSOURI, INC. EINDEPNDNC KSCYMOSWDS3 KC MCA Metro MMO 816-337 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO EINDEPNDNC KSCYMOMCDS0 KC MCA Metro MMO 816-367 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO EINDEPNDNC KSCYMOECCA0 KC MCA Metro MMO 816-446 6123 TCG KANSAS CITY, INC. - MO EINDEPNDNC KSCYMOSWDS4 KC MCA Metro MMO 816-796 9533 SOUTHWESTERN BELL EINDEPNDNC KSCYMO44DS0 KC MCA Metro MMO 816-846 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO EINDEPNDNC KSCYMOMCDC0 KC MCA Metro MMO 816-886 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. EINDEPNDNC LENXKS02DS0 KC MCA Metro MMO 816-237 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-278 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO GLADSTONE KSCYMOMCDS0 KC MCA Metro MMO 816-288 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO GLADSTONE LESMMOAH00W KC MCA Metro MMO 816-308 8665 BIRCH TELECOM OF MISSOURI, INC. GLADSTONE KSCYMOSWDS3 KC MCA Metro MMO 816-394 6123 TCG KANSAS CITY, INC. - MO GLADSTONE KSCYMOSWDS4 KC MCA Metro M

Page 31 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-413 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-414 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-420 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO20DS0 KC MCA Metro MMO 816-436 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO20DS0 KC MCA Metro MMO 816-437 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO20DS0 KC MCA Metro MMO 816-438 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO GLADSTONE KSCYMO03X0Y KC MCA Metro MMO 816-452 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-453 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-454 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-455 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-459 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-468 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO20DS0 KC MCA Metro MMO 816-742 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO GLADSTONE KSCYMOECCA0 KC MCA Metro MMO 816-764 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO GLADSTONE KSCAMO54DS0 KC MCA Metro MMO 816-799 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. GLADSTONE LENXKS02DS0 KC MCA Metro MMO 816-849 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO GLADSTONE KSCYMOMCDC0 KC MCA Metro MMO 816-979 9533 SOUTHWESTERN BELL GLADSTONE KSCYMO21DS0 KC MCA Metro MMO 816-252 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-254 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-257 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO44DS0 KC MCA Metro MMO 816-291 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO INDEPNDNCE KSCYMOMCDS0 KC MCA Metro MMO 816-310 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO INDEPNDNCE LESMMOAH00W KC MCA Metro MMO 816-325 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22RS0 KC MCA Metro MMO 816-350 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO48DS0 KC MCA Metro MMO 816-373 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO48DS0 KC MCA Metro MMO 816-379 8665 BIRCH TELECOM OF MISSOURI, INC. INDEPNDNCE KSCYMOSWDS3 KC MCA Metro MMO 816-447 6123 TCG KANSAS CITY, INC. - MO INDEPNDNCE KSCYMOSWDS4 KC MCA Metro MMO 816-461 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-478 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO48DS0 KC MCA Metro MMO 816-503 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO48DS0 KC MCA Metro MMO 816-521 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-581 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO INDEPNDNCE KSCYMOMCDC0 KC MCA Metro MMO 816-704 7421 AT&T LOCAL INDEPNDNCE KSCYMO09DS1 KC MCA Metro MMO 816-735 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO INDEPNDNCE KSCAMO02DS0 KC MCA Metro M

Page 32 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-766 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO INDEPNDNCE KSCYMOECCA0 KC MCA Metro MMO 816-795 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO48DS0 KC MCA Metro MMO 816-828 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO INDEPNDNCE KSCYMO03X0Y KC MCA Metro MMO 816-833 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-836 9533 SOUTHWESTERN BELL INDEPNDNCE KSCYMO22CG0 KC MCA Metro MMO 816-857 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO INDEPNDNCE KSCAMO54DS0 KC MCA Metro MMO 816-877 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. INDEPNDNCE LENXKS02DS0 KC MCA Metro MMO 816-201 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS3 KC MCA Metro MMO 816-202 6385 WEBLINK WIRELESS, INC. KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-203 6385 WEBLINK WIRELESS, INC. KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-206 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-210 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-212 6630 ARCH PAGING INC. KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-213 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-214 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO KANSASCITY KSCYMO03X0Y KC MCA Metro MMO 816-215 6232 NEXTEL COMMUNICATIONS KANSASCITY KSCYKSCV1MD KC MCA Metro MMO 816-216 7421 AT&T LOCAL KANSASCITY KSCYMO09DS1 KC MCA Metro MMO 816-217 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-218 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-221 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-223 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-225 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-231 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-234 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-235 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-241 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-242 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-245 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-247 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-256 4932 LEVEL 3 COMMUNICATIONS, LLC - MO KANSASCITY KSCZMODRDS0 KC MCA Metro MMO 816-260 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-268 3991 EVEREST CONNECTIONS CORPORATION - MO KANSASCITY LENXKS24DS0 KC MCA Metro MMO 816-274 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-275 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro M

Page 33 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-276 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-283 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-289 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-292 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-300 8665 BIRCH TELECOM OF MISSOURI, INC. KANSASCITY KSCYMOSWDS3 KC MCA Metro MMO 816-303 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO KANSASCITY KSCYMOMCDC0 KC MCA Metro MMO 816-304 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-305 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-309 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-326 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO KANSASCITY KSCYMOMCDS0 KC MCA Metro MMO 816-329 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-333 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-340 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-346 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-349 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02RS0 KC MCA Metro MMO 816-360 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-361 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-363 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-365 6232 NEXTEL COMMUNICATIONS KANSASCITY KSCYKSCV1MD KC MCA Metro MMO 816-374 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-391 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-392 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-395 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-400 8508 WINSTAR WIRELESS, INC. - MO KANSASCITY KSCYMOSWDS2 KC MCA Metro MMO 816-401 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-404 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-405 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-410 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI KANSASCITY KSCYMOSWDS0 KC MCA Metro MMO 816-412 7594 BROOKS FIBER COMMUNICATIONS - MISSOURI KANSASCITY KSCYMOSWDS0 KC MCA Metro MMO 816-418 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-419 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-421 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-426 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-435 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro M

Page 34 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-440 6630 ARCH PAGING INC. KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-444 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-448 6123 TCG KANSAS CITY, INC. - MO KANSASCITY KSCYMOSWDS4 KC MCA Metro MMO 816-451 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO KANSASCITY KSCAMO54DS0 KC MCA Metro MMO 816-456 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-458 6313 AIRTOUCH PAGING - KANSAS KANSASCITY LENXKSAA1MD KC MCA Metro MMO 816-460 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-467 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-471 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-472 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-474 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-477 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO KANSASCITY LESMMOAH00W KC MCA Metro MMO 816-480 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-482 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01RS0 KC MCA Metro MMO 816-483 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-497 6521 METROCALL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-500 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-502 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS3 KC MCA Metro MMO 816-504 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-506 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-507 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-509 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-510 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-512 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-513 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-516 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-517 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-518 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-519 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-520 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-522 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-523 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-527 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-529 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro M

Page 35 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-531 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-533 3375 KMC TELECOM III, INC. - MO KANSASCITY KSCYMOAV0MD KC MCA Metro MMO 816-536 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-545 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-547 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-550 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-555 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO5503T KC MCA Metro MMO 816-556 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-559 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS3 KC MCA Metro MMO 816-560 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-561 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-564 6232 NEXTEL COMMUNICATIONS KANSASCITY KSCYKSCV1MD KC MCA Metro MMO 816-569 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO KANSASCITY KSCYMOECCA0 KC MCA Metro MMO 816-571 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-572 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-576 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS0 KC MCA Metro MMO 816-582 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-585 3375 KMC TELECOM III, INC. - MO KANSASCITY KSCYMOAVX0Z KC MCA Metro MMO 816-589 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-590 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-591 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-595 4142 TELIGENT, INC. - MO KANSASCITY KSCAMO03DS0 KC MCA Metro MMO 816-601 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-602 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-603 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-604 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-605 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-606 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF6MD KC MCA Metro MMO 816-607 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-608 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-609 7102 DIGITAL TELEPORT, INC. KANSASCITY MRHGMOQADS1 KC MCA Metro MMO 816-616 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-645 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGOCM1 KC MCA Metro MMO 816-651 6664 SPRINT SPECTRUM L.P. KANSASCITY INDPMOCJCM0 KC MCA Metro M

Page 36 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-653 3375 KMC TELECOM III, INC. - MO KANSASCITY KSCYMOSTX0Y KC MCA Metro MMO 816-654 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-665 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-668 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-674 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-678 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-679 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-683 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO KANSASCITY KSCYMOMCDC0 KC MCA Metro MMO 816-686 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGOCM0 KC MCA Metro MMO 816-691 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-693 1752 ADELPHIA BUSINESS SOLUTIONS OPERATIONS, INC.-MO KANSASCITY KSCBMOQICA0 KC MCA Metro MMO 816-695 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-698 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS0 KC MCA Metro MMO 816-699 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-701 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS3 KC MCA Metro MMO 816-703 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-714 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-716 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-717 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-718 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-719 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-721 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGOCM1 KC MCA Metro MMO 816-726 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-728 6010 AT&T WIRELESS SERVICES, INC. KANSASCITY KSCYMO09CM1 KC MCA Metro MMO 816-729 6664 SPRINT SPECTRUM L.P. KANSASCITY INDPMOCJCM0 KC MCA Metro MMO 816-730 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-739 6701 AERIAL COMMUNICATIONS KANSASCITY KSCZMOVR1MD KC MCA Metro MMO 816-745 3430 PRISM MISSOURI OPERATIONS, LLC - MO KANSASCITY KSCBMO30DS0 KC MCA Metro MMO 816-751 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-753 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-756 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-757 6521 METROCALL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-759 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05RS0 KC MCA Metro MMO 816-760 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro M

Page 37 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-769 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-771 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-777 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. KANSASCITY LENXKS02DS0 KC MCA Metro MMO 816-783 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-784 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-793 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO KANSASCITY KSCAMO02DS0 KC MCA Metro MMO 816-797 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-798 6521 METROCALL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-802 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-803 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-804 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-805 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-806 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-807 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-808 6671 SOUTHWESTERN BELL MOBILE SYSTEMS KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-809 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-810 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-812 6671 SOUTHWESTERN BELL MOBILE SYSTEMS KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-813 6671 SOUTHWESTERN BELL MOBILE SYSTEMS KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-818 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-819 6630 ARCH PAGING INC. KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-820 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-821 6630 ARCH PAGING INC. KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-822 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-823 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-824 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-830 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-835 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-840 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-842 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-843 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-844 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-853 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-854 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro M

Page 38 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-855 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-860 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-861 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04CG0 KC MCA Metro MMO 816-863 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-864 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-868 6532 CMT PARTNERS DBA CELLULAR ONE KANSASCITY KSCYMOSW1MD KC MCA Metro MMO 816-870 6521 METROCALL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-871 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04RS0 KC MCA Metro MMO 816-881 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-889 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-896 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYMOGF4MD KC MCA Metro MMO 816-898 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP KANSASCITY KSCYKSOF1MD KC MCA Metro MMO 816-914 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-916 6664 SPRINT SPECTRUM L.P. KANSASCITY LENXKSGO2MD KC MCA Metro MMO 816-918 6232 NEXTEL COMMUNICATIONS KANSASCITY KSCYKSCV1MD KC MCA Metro MMO 816-920 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO01DS0 KC MCA Metro MMO 816-921 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04CG0 KC MCA Metro MMO 816-922 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04CG0 KC MCA Metro MMO 816-923 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04CG0 KC MCA Metro MMO 816-924 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04CG0 KC MCA Metro MMO 816-926 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-929 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO04RS0 KC MCA Metro MMO 816-931 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-932 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-936 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS3 KC MCA Metro MMO 816-960 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-968 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO05DS0 KC MCA Metro MMO 816-983 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-985 6232 NEXTEL COMMUNICATIONS KANSASCITY KSCYKSCV1MD KC MCA Metro MMO 816-989 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-990 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE KANSASCITY KSCYMO55DS1 KC MCA Metro MMO 816-995 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-997 9533 SOUTHWESTERN BELL KANSASCITY KSCYMO02DS0 KC MCA Metro MMO 816-246 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro M

Page 39 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-251 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro MMO 816-272 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LEESSUMMIT KSCYMOMCDS0 KC MCA Metro MMO 816-282 8665 BIRCH TELECOM OF MISSOURI, INC. LEESSUMMIT KSCYMOSWDS3 KC MCA Metro MMO 816-347 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro MMO 816-422 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO LEESSUMMIT LESMMOAH00W KC MCA Metro MMO 816-434 6123 TCG KANSAS CITY, INC. - MO LEESSUMMIT KSCYMOSWDS4 KC MCA Metro MMO 816-524 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro MMO 816-525 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro MMO 816-554 9533 SOUTHWESTERN BELL LEESSUMMIT KSCYMO41DS0 KC MCA Metro MMO 816-573 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO LEESSUMMIT KSCYMO03X0Y KC MCA Metro MMO 816-600 7421 AT&T LOCAL LEESSUMMIT KSCYMO09DS1 KC MCA Metro MMO 816-692 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO LEESSUMMIT KSCAMO54DS0 KC MCA Metro MMO 816-837 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO LEESSUMMIT KSCYMOECCA0 KC MCA Metro MMO 816-875 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. LEESSUMMIT LENXKS02DS0 KC MCA Metro MMO 816-222 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO LIBERTY KSCYMOMCDC0 KC MCA Metro MMO 816-368 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO LIBERTY KSCYMOMCDS0 KC MCA Metro MMO 816-407 9533 SOUTHWESTERN BELL LIBERTY KSCYMO42DS0 KC MCA Metro MMO 816-415 9533 SOUTHWESTERN BELL LIBERTY KSCYMO42DS0 KC MCA Metro MMO 816-429 6123 TCG KANSAS CITY, INC. - MO LIBERTY KSCYMOSWDS4 KC MCA Metro MMO 816-476 8665 BIRCH TELECOM OF MISSOURI, INC. LIBERTY KSCYMOSWDS3 KC MCA Metro MMO 816-489 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO LIBERTY LESMMOAH00W KC MCA Metro MMO 816-621 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO LIBERTY KSCYMO03X0Y KC MCA Metro MMO 816-736 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO LIBERTY KSCYMOECCA0 KC MCA Metro MMO 816-781 9533 SOUTHWESTERN BELL LIBERTY KSCYMO42DS0 KC MCA Metro MMO 816-792 9533 SOUTHWESTERN BELL LIBERTY KSCYMO42DS0 KC MCA Metro MMO 816-883 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. LIBERTY LENXKS02DS0 KC MCA Metro MMO 816-335 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO NASHUA KSCYMOMCDS0 KC MCA Metro MMO 816-439 6123 TCG KANSAS CITY, INC. - MO NASHUA KSCYMOSWDS4 KC MCA Metro MMO 816-479 8665 BIRCH TELECOM OF MISSOURI, INC. NASHUA KSCYMOSWDS3 KC MCA Metro MMO 816-499 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO NASHUA LESMMOAH00W KC MCA Metro MMO 816-734 9533 SOUTHWESTERN BELL NASHUA KSCYMO20DS0 KC MCA Metro MMO 816-885 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. NASHUA LENXKS02DS0 KC MCA Metro MMO 816-984 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO NASHUA KSCYMOECCA0 KC MCA Metro MMO 816-298 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO PARKVILLE KSCYMOMCDS0 KC MCA Metro M

Page 40 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-352 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO PARKVILLE KSCYMOMCDC0 KC MCA Metro MMO 816-389 8665 BIRCH TELECOM OF MISSOURI, INC. PARKVILLE KSCYMOSWDS3 KC MCA Metro MMO 816-423 6123 TCG KANSAS CITY, INC. - MO PARKVILLE KSCYMOSWDS4 KC MCA Metro MMO 816-488 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO PARKVILLE KSCAMO54DS0 KC MCA Metro MMO 816-505 9533 SOUTHWESTERN BELL PARKVILLE KSCYMO23DS0 KC MCA Metro MMO 816-577 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO PARKVILLE LESMMOAH00W KC MCA Metro MMO 816-584 9533 SOUTHWESTERN BELL PARKVILLE KSCYMO23DS0 KC MCA Metro MMO 816-587 9533 SOUTHWESTERN BELL PARKVILLE KSCYMO23DS0 KC MCA Metro MMO 816-647 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO PARKVILLE KSCYMO03X0Y KC MCA Metro MMO 816-722 8508 WINSTAR WIRELESS, INC. - MO PARKVILLE KSCYMOSWDS2 KC MCA Metro MMO 816-741 9533 SOUTHWESTERN BELL PARKVILLE KSCYMO23DS0 KC MCA Metro MMO 816-746 9533 SOUTHWESTERN BELL PARKVILLE KSCYMO23DS0 KC MCA Metro MMO 816-878 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. PARKVILLE LENXKS02DS0 KC MCA Metro MMO 816-947 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO PARKVILLE KSCYMOECCA0 KC MCA Metro MMO 816-313 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-332 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO RAYTOWN KSCYMOMCDS0 KC MCA Metro MMO 816-353 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-356 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-358 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-382 8665 BIRCH TELECOM OF MISSOURI, INC. RAYTOWN KSCYMOSWDS3 KC MCA Metro MMO 816-399 6123 TCG KANSAS CITY, INC. - MO RAYTOWN KSCYMOSWDS4 KC MCA Metro MMO 816-599 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO RAYTOWN LESMMOAH00W KC MCA Metro MMO 816-684 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO RAYTOWN KSCAMO54DS0 KC MCA Metro MMO 816-737 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-743 9533 SOUTHWESTERN BELL RAYTOWN KSCYMO24CG0 KC MCA Metro MMO 816-876 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. RAYTOWN LENXKS02DS0 KC MCA Metro MMO 816-948 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO RAYTOWN KSCYMOECCA0 KC MCA Metro MMO 816-991 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO RAYTOWN KSCYMOMCDC0 KC MCA Metro MMO 816-204 7421 AT&T LOCAL SOKANSASCY KSCYMO09DS1 KC MCA Metro MMO 816-286 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO SOKANSASCY KSCYMOMCDS0 KC MCA Metro MMO 816-316 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-377 4142 TELIGENT, INC. - MO SOKANSASCY KSCAMO03DS0 KC MCA Metro MMO 816-442 6123 TCG KANSAS CITY, INC. - MO SOKANSASCY KSCYMOSWDS4 KC MCA Metro MMO 816-457 8665 BIRCH TELECOM OF MISSOURI, INC. SOKANSASCY KSCYMOSWDS3 KC MCA Metro M

Page 41 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-501 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45DS0 KC MCA Metro MMO 816-508 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45DS0 KC MCA Metro MMO 816-612 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45RS0 KC MCA Metro MMO 816-672 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45RS0 KC MCA Metro MMO 816-673 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO SOKANSASCY KSCYMOECCA0 KC MCA Metro MMO 816-696 7407 MCLEOD USA TELECOMMUNICATIONS SERVICES, INC. - MO SOKANSASCY KSCAMO54DS0 KC MCA Metro MMO 816-761 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-763 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-765 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-767 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-778 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. SOKANSASCY LENXKS02DS0 KC MCA Metro MMO 816-927 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO SOKANSASCY KSCYMO03X0Y KC MCA Metro MMO 816-935 7589 E.SPIRE COMMUNICATIONS SERVICES, INC. - MO SOKANSASCY KSCYMOMCDC0 KC MCA Metro MMO 816-941 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45DS0 KC MCA Metro MMO 816-942 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45DS0 KC MCA Metro MMO 816-943 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO45DS0 KC MCA Metro MMO 816-965 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-966 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-969 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-986 9533 SOUTHWESTERN BELL SOKANSASCY KSCYMO25DS0 KC MCA Metro MMO 816-200 7421 AT&T LOCAL TIFFANYSPG KSCYMO09DS1 KC MCA Metro MMO 816-285 4142 TELIGENT, INC. - MO TIFFANYSPG KSCAMO03DS0 KC MCA Metro MMO 816-372 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO TIFFANYSPG KSCYMOMCDS0 KC MCA Metro MMO 816-398 6123 TCG KANSAS CITY, INC. - MO TIFFANYSPG KSCYMOSWDS4 KC MCA Metro MMO 816-462 8665 BIRCH TELECOM OF MISSOURI, INC. TIFFANYSPG KSCYMOSWDS3 KC MCA Metro MMO 816-677 3654 OMNIPLEX COMMUNICATIONS GROUP, LLC - MO TIFFANYSPG LESMMOAH00W KC MCA Metro MMO 816-725 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO TIFFANYSPG KSCYMO03X0Y KC MCA Metro MMO 816-801 9533 SOUTHWESTERN BELL TIFFANYSPG KSCYMO23DS0 KC MCA Metro MMO 816-852 8508 WINSTAR WIRELESS, INC. - MO TIFFANYSPG KSCYMOSWDS2 KC MCA Metro MMO 816-872 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. TIFFANYSPG LENXKS02DS0 KC MCA Metro MMO 816-880 9533 SOUTHWESTERN BELL TIFFANYSPG KSCYMO23DS0 KC MCA Metro MMO 816-891 9533 SOUTHWESTERN BELL TIFFANYSPG KSCYMO23DS0 KC MCA Metro MMO 816-964 8729 SPRINT COMMUNICATIONS COMPANY, L.P. - MO TIFFANYSPG KSCYMOECCA0 KC MCA Metro MMO 816-526 1151 SPECTRA COMMUNICATIONS GROUP, LLC WHITESVL WHVLMOXARS0 KC MCA Metro M

Page 42 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-293 9533 SOUTHWESTERN BELL ARCHIE ARCHMOAXRS0 KC MCA 5MO 816-430 9533 SOUTHWESTERN BELL ARCHIE ARCHMOAXRS0 KC MCA 5 YMO 816-450 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI DEARBORN DRBRMOXARS0 KC MCA 5 YMO 816-992 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI DEARBORN DRBRMOXARS0 KC MCA 5MO 816-619 472 CASS COUNTY TELEPHONE CO. - MO DREXEL DRXLMOXARS0 KC MCA 5 YMO 816-657 472 CASS COUNTY TELEPHONE CO. - MO DREXEL DRXLMOXARS0 KC MCA 5 NMO 816-626 472 CASS COUNTY TELEPHONE CO. - MO EAST LYNNE ELYNMOXARS0 KC MCA 5 YMO 816-869 472 CASS COUNTY TELEPHONE CO. - MO EAST LYNNE ELYNMOXARS0 KC MCA 5 NMO 816-250 1807 MO - KAN DIAL, INC. FREEMAN FRMNMOXADS0 KC MCA 5 YMO 816-899 1807 MO - KAN DIAL, INC. FREEMAN FRMNMOXADS0 KC MCA 5 NMO 816-773 472 CASS COUNTY TELEPHONE CO. - MO GARDENCITY GRCYMOXARS0 KC MCA 5 YMO 816-862 472 CASS COUNTY TELEPHONE CO. - MO GARDENCITY GRCYMOXARS0 KC MCA 5 NMO 816-290 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HENRIETTA HNRTMOXARS0 KC MCA 5 YMO 816-494 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HENRIETTA HNRTMOXARS0 KC MCA 5MO 816-732 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HOLDEN HLDNMOXARS0 KC MCA 5MO 816-850 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HOLDEN HLDNMOXARS0 KC MCA 5 YMO 816-597 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI KINGSVILLE KGVLMOXARS0 KC MCA 5MO 816-720 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI KINGSVILLE KGVLMOXARS0 KC MCA 5 YMO 816-528 1932 LATHROP TELEPHONE CO. LATHROP LTHPMOXADS0 KC MCA 5 NMO 816-740 1932 LATHROP TELEPHONE CO. LATHROP LTHPMOXADS0 KC MCA 5 YMO 816-296 1151 SPECTRA COMMUNICATIONS GROUP, LLC LAWSON LWSNMOXBRS0 KC MCA 5MO 816-580 1151 SPECTRA COMMUNICATIONS GROUP, LLC LAWSON LWSNMOXBRS0 KC MCA 5MO 816-230 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI ODESSA ODSSMOXARS0 KC MCA 5 YMO 816-263 6701 AERIAL COMMUNICATIONS ODESSA ODSSMOXD1MD KC MCA 5MO 816-565 4038 KANSAS CITY SMSA LIMITED PARTNERSHIP ODESSA WRBGMOXCH01 KC MCA 5MO 816-633 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI ODESSA ODSSMOXARS0 KC MCA 5MO 816-539 1151 SPECTRA COMMUNICATIONS GROUP, LLC PLATTSBURG PLBGMOXARS0 KC MCA 5MO 816-592 6677 DOBSON CELLULAR SYSTEMS, INC. PLATTSBURG RUVLMOAE1MD KC MCA 5MO 816-930 1151 SPECTRA COMMUNICATIONS GROUP, LLC PLATTSBURG PLBGMOXARS0 KC MCA 5MO 816-470 9533 SOUTHWESTERN BELL RICHMOND RCMDMOPRRS0 KC MCA 5 YMO 816-776 9533 SOUTHWESTERN BELL RICHMOND RCMDMOPRRS0 KC MCA 5MO 816-680 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI STRASBURG STBGMOXXRS0 KC MCA 5 YMO 816-865 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI STRASBURG STBGMOXXRS0 KC MCA 5MO 816-240 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI WELLINGTON WGTNMOXARS0 KC MCA 5 Y

Page 43 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-934 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI WELLINGTON WGTNMOXARS0 KC MCA 5MO 816-280 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI CAMDEN PT CMPNMOXARS0 KC MCA 4 YMO 816-445 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI CAMDEN PT CMPNMOXARS0 KC MCA 4MO 816-618 472 CASS COUNTY TELEPHONE CO. - MO CLEVELAND CLEVMOXARS0 KC MCA 4 YMO 816-658 472 CASS COUNTY TELEPHONE CO. - MO CLEVELAND CLEVMOXARS0 KC MCA 4 NMO 816-227 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI EDGERTON EGTNMOXARS0 KC MCA 4MO 816-790 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI EDGERTON EGTNMOXARS0 KC MCA 4 YMO 816-380 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HARRISONVL HNVLMOXARS0 KC MCA 4 YMO 816-884 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HARRISONVL HNVLMOXARS0 KC MCA 4MO 816-887 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HARRISONVL HNVLMOXARS0 KC MCA 4MO 816-264 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HOLT HOLTMOXARS0 KC MCA 4MO 816-320 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI HOLT HOLTMOXARS0 KC MCA 4 YMO 816-566 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI LONEJACK LNJCMOXARS0 KC MCA 4MO 816-697 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI LONEJACK LNJCMOXARS0 KC MCA 4 YMO 816-267 6701 AERIAL COMMUNICATIONS OAK GROVE OKGVMOXB1MD KC MCA 4MO 816-625 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI OAK GROVE OKGVMOXADS1 KC MCA 4MO 816-690 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI OAK GROVE OKGVMOXADS1 KC MCA 4 YMO 816-496 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI ORRICK ORCKMOXARS0 KC MCA 4MO 816-770 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI ORRICK ORCKMOXARS0 KC MCA 4 YMO 816-758 472 CASS COUNTY TELEPHONE CO. - MO PECULIAR PCLRMOXADS1 KC MCA 4 NMO 816-779 472 CASS COUNTY TELEPHONE CO. - MO PECULIAR PCLRMOXADS1 KC MCA 4 YMO 816-540 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI PLEASANTHL PLHLMOXARS0 KC MCA 4 YMO 816-987 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI PLEASANTHL PLHLMOXARS0 KC MCA 4MO 816-357 1151 SPECTRA COMMUNICATIONS GROUP, LLC TRIMBLE TRMBMOXARS0 KC MCA 4MO 816-370 1151 SPECTRA COMMUNICATIONS GROUP, LLC TRIMBLE TRMBMOXARS0 KC MCA 4MO 816-386 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI WESTON WSTNMOXARS0 KC MCA 4MO 816-640 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI WESTON WSTNMOXARS0 KC MCA 4 YMO 816-249 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI BUCKNER BCKNMOXARS0 KC MCA 3MO 816-650 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI BUCKNER BCKNMOXARS0 KC MCA 3 YMO 816-330 9533 SOUTHWESTERN BELL FARLEY KSCYMO23DS0 KC MCA 3 YMO 816-354 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO FARLEY KSCYMOMCDS0 KC MCA 3 YMO 816-397 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO FARLEY KSCYMO03X0Y KC MCA 3MO 816-546 9533 SOUTHWESTERN BELL FARLEY KSCYMO23DS0 KC MCA 3MO 816-638 4142 TELIGENT, INC. - MO FARLEY KSCAMO03DS0 KC MCA 3

Page 44 of 45Last Updated: 10/11/2001

State NPA-NXX OCN Company Rate Center Switch MCA Area MCA NXX 1, 2, 3, 4

1. "M" indicates NXX codes located in the mandatory MCA zones which include the principal zone and tiers 1 and 2 in St. Louis and Kansas City, and the principal zone and tier 1 in Springfield. NXX codes in these mandatory areas should be treated as mandatory tier MCA codes for the purpose of local calling scopes.

MISSOURI NPA-NXXs in the METROPOLITAN CALLING AREA (MCA)

NOTES:

4. Blank spaces indicate that the code has not been identified as either MCA or non-MCA by the code holder.

Please forward any changes to: [email protected]

2. "Y" indicates the code was identified by the code holder as an MCA NXX in the optional tiers.

3. "N" indicates the code was identified by the code holder as a non-MCA NXX in the optional tiers.

MO 816-733 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. FARLEY LENXKS02DS0 KC MCA 3 YMO 816-243 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI FERRELVIEW FLVWMOXADS0 KC MCA 3MO 816-270 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI FERRELVIEW FLVWMOXADS0 KC MCA 3 YMO 816-464 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI FERRELVIEW FLVWMOXADS0 KC MCA 3MO 816-466 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE FERRELVIEW FLVWMOXADS0 KC MCA 3MO 816-490 6530 MOBILE RADIO COMMUNICATIONS DBA MOBILFONE FERRELVIEW FLVWMOXADS0 KC MCA 3MO 816-614 8508 WINSTAR WIRELESS, INC. - MO FERRELVIEW KSCYMOSWDS2 KC MCA 3MO 816-713 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI FERRELVIEW FLVWMOXADS0 KC MCA 3MO 816-355 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO GRAIN VLY KSCYMOMCDS0 KC MCA 3 YMO 816-443 9533 SOUTHWESTERN BELL GRAIN VLY BLSPMOCADS0 KC MCA 3MO 816-495 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO GRAIN VLY KSCYMO03X0Y KC MCA 3MO 816-847 9533 SOUTHWESTERN BELL GRAIN VLY BLSPMOCADS0 KC MCA 3 YMO 816-867 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. GRAIN VLY LENXKS02DS0 KC MCA 3 YMO 816-366 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO GREENWOOD KSCYMOMCDS0 KC MCA 3 YMO 816-534 8957 BROADSPAN COMM, INC.DBA PRIMARY NTWK COM - MO GREENWOOD KSCYMO03X0Y KC MCA 3MO 816-537 9533 SOUTHWESTERN BELL GREENWOOD KSCYMO41DS0 KC MCA 3 YMO 816-623 9533 SOUTHWESTERN BELL GREENWOOD KSCYMO41DS0 KC MCA 3MO 816-744 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. GREENWOOD LENXKS02DS0 KC MCA 3 YMO 816-628 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI KEARNEY KRNYMOXADS1 KC MCA 3 YMO 816-635 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI KEARNEY KRNYMOXADS1 KC MCA 3MO 816-902 6102 EXOP OF MISSOURI, INC. KEARNEY KRNYMO01DS0 KC MCA 3MO 816-903 6102 EXOP OF MISSOURI, INC. KEARNEY KRNYMO01DS0 KC MCA 3 YMO 816-996 9533 SOUTHWESTERN BELL LEAVEHLSNG LVWOKSSHDS0 KC MCA 3 YMO 816-578 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI LKLOTAWANA LKLTMOXARS0 KC MCA 3 YMO 816-774 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI LKLOTAWANA LKLTMOXARS0 KC MCA 3MO 816-336 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI MISSOURICY MSCYMOXARS0 KC MCA 3MO 816-750 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI MISSOURICY MSCYMOXARS0 KC MCA 3 YMO 816-431 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI PLATTECITY PLCYMOXARS0 KC MCA 3MO 816-858 1957 SPRINT/UNITED TELEPHONE CO. OF MISSOURI PLATTECITY PLCYMOXARS0 KC MCA 3 YMO 816-343 4004 GLOBAL CROSSING LOCAL SERVICES, INC.-MO SMITHVILLE KSCYMOMCDS0 KC MCA 3 YMO 816-532 9533 SOUTHWESTERN BELL SMITHVILLE SMVLMOTRRS0 KC MCA 3 YMO 816-866 4891 GABRIEL COMMUNICATIONS OF MISSOURI, INC. SMITHVILLE LENXKS02DS0 KC MCA 3 YMO 816-873 9533 SOUTHWESTERN BELL SMITHVILLE SMVLMOTRRS0 KC MCA 3

Page 45 of 45Last Updated: 10/11/2001