AT&T West -- Tandem Homing Plan

This file includes the Tandem Homing Plan geographic map by state.Download the data file by region Rate Center specific information

-- A planning tool designed to help carriers identify the most efficient AT&T West tandem to assign their codes in the Telcordia LERG, based on the Rate Center being served. 

• AT&T West has developed a "Tandem Homing Plan" (Plan) to optimize interconnection in its network and minimize capacity bottlenecks at constrained tandems.  

• The Plan is intended to ensure Competitive Local Exchange Carriers and Wireless Service Providers adequate sizing of trunks and available capacity for additional growth at all AT&T West tandems.

• The Tandem Homing Plan is a recommendation for carriers to use when designing their network to identify the most efficient AT&T West tandem in which to assign their codes in the LERG based on the Rate Areas being served.

• The AT&T West Tandem Homing Plan identifies every AT&T rate center in a LATA in which AT&T is the Local Exchange Carrier providing service. The Plan principally identifies the AT&T West Tandem Homing Arrangement by Rate Area, thereby allowing Carrier's homing architectures to resemble AT&T's homing architecture.

• AT&T West is recommending Carriers utilize the tandem associated with the rate center, as identified in the Plan when entering the tandem in Telcordia's Routing Database (LERG) for each NXX allocated to the Carrier.

Published Date: 07/01/13

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies.

720

730

724

728

721

722

738

726

732

734740

736

722

730

740740

730730

722722

California Region LATA's

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California Region

LATA's720, RENO, NEVADA721, PAHRUMP NEVADA722, SAN FRANCISCO CALIFORNIA724, CHICO CALIFORNIA726, SACRAMENTO CALIFORNIA728, FRESNO CALIFORNIA730, LOS ANGELES CALIFORNIA732, SAN DIEGO CALIFORNIA734, BAKERSFIELD CA736, MONTEREY CALIFORNIA738, STOCKTON CALIFORNIA740, SAN LUIS OBISPO CALIFORNIA

Tandem Homing PlanLATA 728 - Fresno

MADERA

COALINGA

SPRINGVILLEAVENAL

SEQUOIA

FRESNO

BURREL

CLOVIS

TULARE

VISALIA

FIREBAUGH

THREE RIVERS

STRATFORD

HURON

HANFORD

DINUBA

PORTERVILLE

MENDOTA

LEMOORE

SELMA

PIXLEY

TIPTON

LATONRIVERDALE

WOODLAKE

KINGSBURG

CARUTHERS

TERRA BELLA

ORANGE COVEPARLIER

DEL REY

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)FRSNCA0124T

Tandem Homing PlanLATA 730 - Los Angeles - North

OJAI

PIRU

PALMDALE:PALMDALE DA

FILLMORE

SANTA CLARITA:NEWHALL-CASTAIC DA

SIMI VALLEY

AGOURACANOGA PARK

OAK VIEW

MOORPARK

SATICOY

NORTHRIDGE

VAN NUYS

RESEDA

VENTURA CENTRAL

GLENDALE

SANTA CLARITA:SAUGUS CNYN-CNTRY DA

PALMDALE:AGUA DULCE DA

PALMDALE:LEONA VALLEY DA

PASADENA:PASADENA DA

VENTURA EAST

NORTH HOLLYWOODBURBANK:BURBANK DALA CRESCENTAPASADENA:LA CANADA DA

LOS ANGELES:DA 14BEVERLY HILLSLOS ANGELES:DA 02

BURBANK:SUN VALLEY DA

LOS ANGELES:DA 03ARCADIA

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)Rate Centers w/Tandem

ALHBCA0165T

ANHMCA0152T

GRDNCA0254T

LSANCA0398T

LSANCA0527T

RVSDCA0125T

SHOKCA0251T

Tandem Homing PlanLATA 730 - Los Angeles - Metro

CORONA

ORANGE

CANOGA PARKAGOURA PALMDALE:PALMDALE DA

VAN NUYS

ARLINGTON

SAN PEDRO

YORBA LINDA

RESEDA

ALHAMBRA

ANAHEIM

MIRA LOMA

PLACENTIABREA

GLENDALE

FONTANA

FULLERTON

CYPRESS

EL MONTE

INGLEWOOD

SILVERADO

LOMITA

MONTEBELLO

NORTHRIDGE

ARCADIA

SANTA ANA

PASADENA:PASADENA DA

COMPTON:COMPTON DA

LOS ANGELES:DA 06

BEVERLY HILLS

NORTH HOLLYWOOD

LOS ANGELES:DA 09

GARDEN GROVE

BUENA PARK

LOS ANGELES:DA 14

BURBANK:BURBANK DA

COMPTON:GARDENA DA

LOS ANGELES:DA 05

LA CRESCENTAPASADENA:LA CANADA DA

TORRANCE

LOS ANGELES:DA 02

LOS ANGELES:DA 04

HAWTHORNE

CULVER CITY

BIG BUTTE

LOS ANGELES:DA 03

LOS ANGELES:DA 13

LOS ANGELES:DA 12

EL SEGUNDO

BURBANK:SUN VALLEY DA

LOS ANGELES:DA 11

LOS ANGELES:DA 10

LOS ANGELES:DA 08

LOS ANGELES:DA 01

WOODCREST

SAN PEDRO

LOS ANGELES:DA 07

SANTA ANA

SIMI VALLEY

TEMESCAL CANYON

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)Rate Centers w/Tandem

ALHBCA0165T

ANHMCA0152T

GRDNCA0254T

LSANCA0398T

LSANCA0527T

RVSDCA0125T

SHOKCA0251T

Tandem Homing PlanLATA 730 - Los Angeles - Metro Detail

ALHAMBRA

EL MONTE

INGLEWOOD

GLENDALE

PASADENA:PASADENA DA

LOS ANGELES:DA 06

MONTEBELLO

BEVERLY HILLS

ARCADIA

LOS ANGELES:DA 09

LOS ANGELES:DA 14

LOS ANGELES:DA 05

LOS ANGELES:DA 02

LOS ANGELES:DA 04

HAWTHORNE

CULVER CITY

LOS ANGELES:DA 03

LOS ANGELES:DA 13

LOS ANGELES:DA 12

COMPTON:COMPTON DA

EL SEGUNDO

COMPTON:GARDENA DA

LOS ANGELES:DA 11

VAN NUYS

LOS ANGELES:DA 10

NORTH HOLLYWOOD

LOS ANGELES:DA 08

RESEDA

LOS ANGELES:DA 01

LOS ANGELES:DA 07

BURBANK:BURBANK DA PASADENA:LA CANADA DA

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)Rate Centers w/Tandem

ALHBCA0165T

ANHMCA0152T

GRDNCA0254T

LSANCA0398T

LSANCA0527T

RVSDCA0125T

SHOKCA0251T

Tandem Homing PlanLATA 730 - Los Angeles - East

BAKER

DEATH VALLEY

SHOSHONE

OJAI

MOUNTAIN PASS

PALMDALE:PALMDALE DA

PIRUFILLMORE

BIG BUTTE

SANTA CLARITA:NEWHALL-CASTAIC DA

SIMI VALLEY

OAK VIEW

AGOURACANOGA PARK

MOORPARK

FONTANA

SANTA CLARITA:SAUGUS CNYN-CNTRY DASATICOY

NORTHRIDGE

VAN NUYS

ALHAMBRA

VENTURA CENTRAL

PASADENA:PASADENA DAGLENDALE

EL MONTE

PALMDALE:LEONA VALLEY DA

INGLEWOOD

VENTURA EAST

LOS ANGELES:DA 06

BEVERLY HILLS

BURBANK:BURBANK DABURBANK:SUN VALLEY DA

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)Rate Centers w/Tandem

ALHBCA0165T

ANHMCA0152T

GRDNCA0254T

LSANCA0398T

LSANCA0527T

RVSDCA0125T

SHOKCA0251T

Tandem Homing PlanLATA 730 - Los Angeles - South

CORONA

IRVINE

SILVERADOSANTA ANA

ORANGE

TRABUCO

RANCHO VIEJO

RIVERSIDE

FONTANA

WOODCREST

COLTON

ARLINGTON

RIALTO

MIRA LOMA

HIGHLAND

CAPISTRANO VALLEY

TEMESCAL CANYON

YORBA LINDA

ANAHEIM

PLACENTIABREA

FULLERTON

CYPRESS

SADDLEBACK VALLEY

SAN PEDRO

NEWPORT BEACH

COMPTON:COMPTON DA

LOS ANGELES:DA 06

GARDEN GROVE

BUENA PARK

LOS ANGELES:DA 09

MONTEBELLO

TORRANCE

LOMITA

INGLEWOOD

HAWTHORNE

SAN PEDRO

LOS ANGELES:DA 05 EL MONTE

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)Rate Centers w/Tandem

ALHBCA0165T

ANHMCA0152T

GRDNCA0254T

LSANCA0398T

LSANCA0527T

RVSDCA0125T

SHOKCA0251T

Tandem Homing PlanLATA 732 - San Diego

JULIAN

BRAWLEY

BORREGO

CALIPATRIA

HOLTVILLE

OCOTILLO

IMPERIAL

CAMPO

RAMONA

JACUMBA

WARNER SPRINGS

EL CAJON

EL CENTRO

VISTA

PINE VALLEY

CHULA VISTA

CALEXICO

HARBISON-ALPINE

PAUMA VALLEY

DULZURA

FALLBROOK

VALLEY CENTER

LA MESA

ESCONDIDO

POWAY

OCEANSIDE:PENDLETON DA

LA JOLLA

DEL MAR

SAN DIEGO:SAN DIEGO DA

SAN MARCOS

SAN DIEGO:MIRA MESA DA

ENCINITAS

RANCHO SANTA FERANCHO BERNARDO

NATIONAL CITY

OCEANSIDE:OCEANSIDE DA

SAN DIEGO:LINDA VISTA DA

OCEANSIDE:CARLSBAD DA

RANCHO PENASQUITOS

CORONADO

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)SNDGCA0290T

Tandem Homing PlanLATA 734 - Bakersfield

LEBEC

TEHACHAPI

EDWARDS

MOJAVE

BAKERSFIELD:SOUTH DA

WALKER BASIN

WASCO

ROSAMOND

BAKERSFIELD:NORTH DA

DELANO

ARVIN

BAKERSFIELD:MAIN DA

SHAFTER

EARLIMART

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)BKFDCA1176T

KING CITY

SALINAS

TRES PINOS

HOLLISTER

CARMEL

SAN ARDO

BIG SUR

SOLEDAD

GONZALESCARMEL VALLEY

GREENFIELD (MONTEREY)

SAN LUCAS

MONTEREY

CHUALAR

SAN JUANCASTROVILLE

Tandem Homing PlanLATA 736 - Monterey

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)SLNSCA0102T

YOSEMITE

MERCED

LOS BANOS

LODI

STOCKTON

TRACY

ANGELS CAMP

TURLOCK

GROVELAND

PINECREST (TUOLUMNE)

MODESTO

OAKDALE

IONE

GUSTINE

CHOWCHILLA

SONORA:JUNO DA

NEWMAN

SAN ANDREAS

HERALD

COULTERVILLE

GALT

PLYMOUTH

JACKSON

JAMESTOWN

WATERFORD:MAIN DA

LE GRAND

VALLEY SPRINGS

ESCALON

ATWATER

SONORA:MAIN DA

MILTON

PLANADA

LOCKEFORD

KNIGHTS FERRY

MOCCASIN

WATERFORD:DON PEDRO DA

WALLACE

SUTTER CREEK

HUGHSON

CROWS LANDING

THORNTON

MOKELUMNE HILL

RIVERBANK

Tandem Homing PlanLATA 738 - Stockton

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)SKTNCA0127T

PASO ROBLES

CAMBRIA

CARRISA PLAINS

SANTA MARGARITA

BRADLEY

ARROYO GRANDE

SAN LUIS OBISPO

NIPOMO

CAYUCOSATASCADERO

MORRO BAY

PISMO BEACH

Tandem Homing PlanLATA 740 - San Luis Obispo

© 2011 AT&T Intellectual Property. All rights reserved. AT&T, theAT&T logo and all other AT&T marks contained herein are

trademarks of AT&T Intellectual Property and/or AT&T affiliatedcompanies.

AT&T California

Tandem(s)SNLOCA0102T