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Area Code 510200 - HAYWARD - - METRO PCS, INC.
Area Code 510201 - OAKLAND - - PEERLESS NETWORK OF CALIFORNIA, LLC - CA
Area Code 510202 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510204 - OAKLAND - Landline - SBC
Area Code 510205 - SAN FRANCISCO - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510206 - FAIRFIELD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510207 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510208 - OAKLAND - Landline - SBC
Area Code 510209 - HAYWARD - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510212 - FREMONT - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510213 - OAKLAND - Cellphone - T-MOBILE USA, INC.
Area Code 510214 - SAN FRANCISCO - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510215 - RICHMOND - Landline - SBC
Area Code 510216 - FREMONT - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510217 - ALAMEDA - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510218 - FREMONT - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510219 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510220 - HAYWARD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510221 - OAKLAND - - SPRINT SPECTRUM L.P.
Area Code 510222 - PINOLE - Landline - SBC
Area Code 510223 - PINOLE - Landline - SBC
Area Code 510224 - PINOLE - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510225 - OAKLAND - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510226 - NEWARK - Landline - SBC
Area Code 510227 - OAKLAND - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510228 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510229 - EMERYVILLE - Landline - SBC
Area Code 510230 - RICHMOND - - T-MOBILE USA, INC.
Area Code 510231 - EL CERRITO - Landline - SBC
Area Code 510232 - EL CERRITO - Landline - SBC
Area Code 510233 - EL CERRITO - Landline - SBC
Area Code 510234 - EL CERRITO - Landline - SBC
Area Code 510235 - RICHMOND - Landline - SBC
Area Code 510236 - RICHMOND - Landline - SBC
Area Code 510237 - RICHMOND - Landline - SBC
Area Code 510238 - OAKLAND - Landline - SBC
Area Code 510239 - ALAMEDA - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510240 - FREMONT - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510241 - OAKLAND - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510242 - RICHMOND - Landline - SBC
Area Code 510243 - PINOLE - Landline - SBC
Area Code 510245 - RODEO - Landline - SBC
Area Code 510247 - FREMONT - Landline - SBC
Area Code 510248 - FREMONT - Landline - PAC - WEST TELECOMM, INC.
Area Code 510249 - NEWARK - Landline - SBC
Area Code 510250 - SAN FRANCISCO - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510251 - OAKLAND - Landline - SBC
Area Code 510252 - NEWARK - Landline - SBC
Area Code 510253 - RICHMOND - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510255 - RICHMOND - - BANDWIDTH.COM CLEC, LLC - CA
Area Code 510256 - WALNUT CREEK - Landline - O1 COMMUNICATIONS, INC. - CA
Area Code 510257 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510258 - HAYWARD - Landline - SBC
Area Code 510259 - HAYWARD - Landline - SBC
Area Code 510260 - OAKLAND - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510261 - OAKLAND - Landline - SBC
Area Code 510262 - PINOLE - Landline - SBC
Area Code 510263 - ALAMEDA - Landline - SBC
Area Code 510264 - HAYWARD - Landline - SBC
Area Code 510265 - HAYWARD - Landline - SBC
Area Code 510266 - HAYWARD - Landline - SBC
Area Code 510267 - OAKLAND - Landline - SBC
Area Code 510268 - OAKLAND - Landline - SBC
Area Code 510269 - SAN FRANCISCO - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510270 - SUNNYVALE - Landline - BROOKS FIBER COMMUNICATIONS OF CALIFORNIA - CA
Area Code 510271 - OAKLAND - Landline - SBC
Area Code 510272 - OAKLAND - Landline - SBC
Area Code 510273 - OAKLAND - Landline - SBC
Area Code 510274 - CASTRO VALLEY - Landline - UTILITY TELEPHONE, INC. - CA
Area Code 510275 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510276 - FREMONT - Landline - SBC
Area Code 510277 - OAKLAND - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510278 - FREMONT - Landline - SBC
Area Code 510279 - PALO ALTO - Landline - PAC - WEST TELECOMM, INC.
Area Code 510280 - BERKELEY - Landline - XO CALIFORNIA, INC.
Area Code 510281 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510282 - OAKLAND - Cellphone - T-MOBILE USA, INC.
Area Code 510283 - EL SOBRANTE - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510284 - FREMONT - Landline - SBC
Area Code 510285 - OAKLAND - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510286 - OAKLAND - Landline - SBC
Area Code 510287 - ALAMEDA - Landline - SBC
Area Code 510288 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510289 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510290 - OAKLAND - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510291 - ALAMEDA - Landline - PAC - WEST TELECOMM, INC.
Area Code 510292 - FREMONT - Landline - SBC
Area Code 510293 - HAYWARD - Landline - SBC
Area Code 510295 - CONCORD - Landline - PAC - WEST TELECOMM, INC.
Area Code 510296 - PINOLE - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510297 - HAYWARD - Landline - SBC
Area Code 510299 - HAYWARD - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510300 - CASTRO VALLEY - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510301 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510302 - SAN FRANCISCO - Landline - SBC
Area Code 510303 - HAYWARD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510304 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510305 - CASTRO VALLEY - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510306 - BERKELEY - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510307 - EL CERRITO - Landline - SBC
Area Code 510308 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510309 - EL SOBRANTE - Landline - USA MOBILITY WIRELESS, INC.
Area Code 510310 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510312 - CASTRO VALLEY - Cellphone - COOK TELECOM, INC.
Area Code 510313 - PINOLE - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510314 - HAYWARD - - SPRINT SPECTRUM L.P.
Area Code 510315 - CASTRO VALLEY - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510316 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510317 - CASTRO VALLEY - Landline - SBC
Area Code 510318 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510319 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510321 - LOS ANGELES - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510322 - PINOLE - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510323 - RICHMOND - Landline - XO CALIFORNIA, INC.
Area Code 510324 - FREMONT - Landline - SBC
Area Code 510325 - SAN FRANCISCO - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510326 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510327 - PINOLE - Landline - PAC - WEST TELECOMM, INC.
Area Code 510328 - - -
Area Code 510329 - HAYWARD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510330 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510331 - HAYWARD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510332 - EMERYVILLE - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510333 - ORINDA - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510334 - SAN LEANDRO - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510336 - OAKLAND - Landline - SBC
Area Code 510337 - OAKLAND - Landline - SBC
Area Code 510338 - OAKLAND - Landline - SBC
Area Code 510339 - OAKLAND - Landline - SBC
Area Code 510342 - HAYWARD - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510343 - OAKLAND - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510344 - FREMONT - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510345 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510346 - OAKLAND - Landline - SBC
Area Code 510347 - SAN LEANDRO - Landline - SBC
Area Code 510348 - OAKLAND - Cellphone - 33 WIRELESS INC.
Area Code 510349 - RICHMOND - Cellphone - COOK TELECOM, INC.
Area Code 510350 - ALAMEDA - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510351 - SAN LEANDRO - Landline - SBC
Area Code 510352 - SAN LEANDRO - Landline - SBC
Area Code 510353 - NEWARK - Landline - SBC
Area Code 510354 - HAYWARD - Landline - SBC
Area Code 510355 - OAKLAND - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510356 - BERKELEY - - SBC
Area Code 510357 - SAN LEANDRO - Landline - SBC
Area Code 510358 - - - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510360 - FREMONT - Landline - SBC
Area Code 510361 - OAKLAND - Cellphone -
Area Code 510363 - HAYWARD - - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510364 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510366 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510367 - RICHMOND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510368 - SAN LEANDRO - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510371 - FREMONT - - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510372 - MARTINEZ - Landline - PAC - WEST TELECOMM, INC.
Area Code 510373 - FREMONT - Landline - PAC - WEST TELECOMM, INC.
Area Code 510374 - PINOLE - Landline - SBC
Area Code 510375 - SAN FRANCISCO - Cellphone - T-MOBILE USA, INC.
Area Code 510376 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510377 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510378 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510379 - OAKLAND - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510380 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510381 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510382 - SAN LEANDRO - Landline - SBC
Area Code 510383 - OAKLAND - Landline - SBC
Area Code 510384 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510385 - OAKLAND - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510386 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510387 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510388 - BENICIA - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510389 - RICHMOND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510390 - LOS ANGELES - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510391 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510392 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510393 - CASTRO VALLEY - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510394 - OAKLAND - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510395 - OAKLAND - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510396 - FREMONT - Cellphone - T-MOBILE USA, INC.
Area Code 510397 - HAYWARD - - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510400 - UNION CITY - Landline - XO CALIFORNIA, INC.
Area Code 510401 - FREMONT - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510402 - FREMONT - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510403 - SAN LORENZO - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510404 - FREMONT - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510405 - FREMONT - Landline - PAC - WEST TELECOMM, INC.
Area Code 510406 - HAYWARD - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510407 - BERKELEY - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510408 - EL SOBRANTE - - SBC
Area Code 510409 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510410 - ALAMEDA - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510412 - OAKLAND - Landline - SBC
Area Code 510413 - FREMONT - Landline - SBC
Area Code 510414 - FREMONT - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510415 - CASTRO VALLEY - Cellphone - T-MOBILE USA, INC.
Area Code 510416 - WALNUT CREEK - Landline - NORTH COUNTY COMMUNICATIONS CORP. - CA
Area Code 510417 - EL SOBRANTE - Cellphone - T-MOBILE USA, INC.
Area Code 510418 - HAYWARD - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510419 - OAKLAND - Landline - SBC
Area Code 510420 - OAKLAND - Landline - SBC
Area Code 510421 - EMERYVILLE - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510422 - BERKELEY - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510423 - OAKLAND - - PAETEC COMMUNICATIONS, INC. - CA
Area Code 510425 - OAKLAND - Landline - SBC
Area Code 510427 - CASTRO VALLEY - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510428 - OAKLAND - Landline - SBC
Area Code 510429 - FREMONT - Landline - SBC
Area Code 510430 - SAN LEANDRO - Landline - SBC
Area Code 510431 - UNION CITY - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510432 - CASTRO VALLEY - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510433 - OAKLAND - Landline - SBC
Area Code 510434 - OAKLAND - Landline - SBC
Area Code 510435 - EL SOBRANTE - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510436 - OAKLAND - Landline - SBC
Area Code 510437 - OAKLAND - Landline - SBC
Area Code 510438 - NEWARK - Landline - SBC
Area Code 510439 - EMERYVILLE - Landline - PAC - WEST TELECOMM, INC.
Area Code 510440 - NEWARK - Landline - SBC
Area Code 510441 - FREMONT - Landline - SBC
Area Code 510442 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510443 - FREMONT - - PEERLESS NETWORK OF CALIFORNIA, LLC - CA
Area Code 510444 - OAKLAND - Landline - SBC
Area Code 510445 - NEWARK - Landline - SBC
Area Code 510446 - OAKLAND - Landline - SBC
Area Code 510448 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510449 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510450 - OAKLAND - Landline - SBC
Area Code 510451 - OAKLAND - Landline - SBC
Area Code 510452 - OAKLAND - Landline - SBC
Area Code 510453 - BERKELEY - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510455 - CROCKETT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510456 - FREMONT - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510457 - OAKLAND - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510459 - SAN FRANCISCO - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510460 - HAYWARD - - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510461 - CASTRO VALLEY - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510463 - SAN LEANDRO - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510464 - SAN LEANDRO - Landline - SBC
Area Code 510465 - OAKLAND - Landline - SBC
Area Code 510466 - VALLEJO - Landline - SBC
Area Code 510467 - OAKLAND - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510468 - FREMONT - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510469 - NEWARK - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510470 - HAYWARD - - BANDWIDTH.COM CLEC, LLC - CA
Area Code 510471 - FREMONT - Landline - SBC
Area Code 510472 - OAKLAND - Cellphone - METRO PCS, INC.
Area Code 510473 - SAN CARLOS - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510474 - FREMONT - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510475 - FREMONT - Landline - SBC
Area Code 510476 - HAYWARD - Landline - SBC
Area Code 510477 - FREMONT - Landline - SBC
Area Code 510478 - MILL VALLEY - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510479 - OAKLAND - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510481 - CASTRO VALLEY - Landline - SBC
Area Code 510482 - OAKLAND - Landline - SBC
Area Code 510483 - SAN LEANDRO - Landline - SBC
Area Code 510484 - ALAMEDA - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510485 - BERKELEY - Landline - METRO PCS, INC.
Area Code 510486 - BERKELEY - Landline - SBC
Area Code 510487 - FREMONT - Landline - SBC
Area Code 510488 - OAKLAND - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510489 - FREMONT - Landline - SBC
Area Code 510490 - NEWARK - Landline - SBC
Area Code 510491 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510492 - MENLO PARK - Landline - SBC
Area Code 510493 - FREMONT - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510494 - FREMONT - Landline - SBC
Area Code 510495 - BERKELEY - Landline - SBC
Area Code 510496 - OAKLAND - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510497 - FREMONT - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510498 - NEWARK - Landline - SBC
Area Code 510499 - FAIRFIELD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510500 - EL CERRITO - Landline - XO CALIFORNIA, INC.
Area Code 510501 - DUBLIN - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510502 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510503 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510504 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510505 - FREMONT - Landline - SBC
Area Code 510506 - EMERYVILLE - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510507 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510508 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510509 - FREMONT - - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510512 - HAYWARD - Landline - T-MOBILE USA, INC.
Area Code 510514 - OAKLAND - Cellphone -
Area Code 510515 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510516 - FREMONT - - BANDWIDTH.COM CLEC, LLC - CA
Area Code 510517 - SAN FRANCISCO - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510520 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510521 - ALAMEDA - Landline - SBC
Area Code 510522 - ALAMEDA - Landline - SBC
Area Code 510523 - ALAMEDA - Landline - SBC
Area Code 510524 - RICHMOND - Landline - SBC
Area Code 510525 - RICHMOND - Landline - SBC
Area Code 510526 - RICHMOND - Landline - SBC
Area Code 510527 - BERKELEY - Landline - SBC
Area Code 510528 - BERKELEY - Landline - SBC
Area Code 510529 - RICHMOND - Landline - SBC
Area Code 510530 - OAKLAND - Landline - SBC
Area Code 510531 - OAKLAND - Landline - SBC
Area Code 510532 - OAKLAND - Landline - SBC
Area Code 510533 - OAKLAND - Landline - SBC
Area Code 510534 - OAKLAND - Landline - SBC
Area Code 510535 - OAKLAND - Landline - SBC
Area Code 510536 - OAKLAND - Landline - SBC
Area Code 510537 - CASTRO VALLEY - Landline - SBC
Area Code 510538 - FREMONT - Landline - SBC
Area Code 510539 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510540 - BERKELEY - Landline - SBC
Area Code 510541 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510542 - BERKELEY - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510543 - NEWARK - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510544 - SAN LEANDRO - Landline - PAC - WEST TELECOMM, INC.
Area Code 510545 - OAKLAND - Landline - XO CALIFORNIA, INC.
Area Code 510546 - CASTRO VALLEY - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510547 - OAKLAND - Landline - SBC
Area Code 510548 - OAKLAND - Landline - SBC
Area Code 510549 - BERKELEY - Landline - SBC
Area Code 510550 - OAKLAND - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510551 - CASTRO VALLEY - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510552 - HAYWARD - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510553 - OAKLAND - Landline - SBC
Area Code 510554 - CASTRO VALLEY - Cellphone - 33 WIRELESS INC.
Area Code 510557 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510558 - BERKELEY - Landline - SBC
Area Code 510559 - BERKELEY - Landline - SBC
Area Code 510561 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510562 - SAN LEANDRO - Landline - SBC
Area Code 510563 - OAKLAND - Landline - SBC
Area Code 510564 - BERKELEY - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510565 - FREMONT - Landline - T-MOBILE USA, INC.
Area Code 510566 - OAKLAND - Landline - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510567 - OAKLAND - Landline - SBC
Area Code 510568 - SAN LEANDRO - Landline - SBC
Area Code 510569 - SAN LEANDRO - Landline - SBC
Area Code 510571 - CASTRO VALLEY - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510572 - FREMONT - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510573 - FREMONT - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510574 - FREMONT - Landline - SBC
Area Code 510575 - OAKLAND - Landline - METRO PCS, INC.
Area Code 510576 - HAYWARD - Landline - XO CALIFORNIA, INC.
Area Code 510577 - SAN LEANDRO - Landline - SBC
Area Code 510578 - HAYWARD - Landline - XO CALIFORNIA, INC.
Area Code 510579 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510580 - HAYWARD - Landline - XO CALIFORNIA, INC.
Area Code 510581 - CASTRO VALLEY - Landline - SBC
Area Code 510582 - FREMONT - Landline - SBC
Area Code 510583 - FREMONT - Landline - SBC
Area Code 510584 - CASTRO VALLEY - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510585 - SAN FRANCISCO - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510586 - CASTRO VALLEY - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510587 - SAN FRANCISCO - Landline - SBC
Area Code 510588 - EMERYVILLE - Landline - PAC - WEST TELECOMM, INC.
Area Code 510589 - DANVILLE - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510590 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510591 - CASTRO VALLEY - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510592 - PINOLE - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510593 - EMERYVILLE - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510594 - OAKLAND - Landline - SBC
Area Code 510595 - OAKLAND - Landline - SBC
Area Code 510596 - BERKELEY - Landline - SBC
Area Code 510597 - BERKELEY - Landline - SBC
Area Code 510599 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510601 - BERKELEY - Landline - SBC
Area Code 510604 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510606 - HAYWARD - - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510607 - FREMONT - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510608 - FREMONT - Landline - SBC
Area Code 510610 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510612 - ALAMEDA - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510613 - OAKLAND - Landline - SBC
Area Code 510614 - SAN LEANDRO - Landline - SBC
Area Code 510615 - OAKLAND - Landline - SBC
Area Code 510618 - DANVILLE - Landline - SBC
Area Code 510619 - SAN FRANCISCO - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510620 - RICHMOND - Landline - SBC
Area Code 510621 - SAN FRANCISCO - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510622 - SAN DIEGO - Landline - SBC
Area Code 510623 - NEWARK - Landline - SBC
Area Code 510624 - FREMONT - Landline - SBC
Area Code 510625 - OAKLAND - Landline - SBC
Area Code 510627 - OAKLAND - Landline - SBC
Area Code 510628 - OAKLAND - Landline - SBC
Area Code 510629 - OAKLAND - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510630 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510632 - SAN LEANDRO - Landline - SBC
Area Code 510633 - SAN LEANDRO - Landline - SBC
Area Code 510635 - SAN LEANDRO - Landline - SBC
Area Code 510636 - OAKLAND - Landline - SBC
Area Code 510637 - OAKLAND - Landline - SBC
Area Code 510638 - SAN LEANDRO - Landline - SBC
Area Code 510639 - SAN LEANDRO - Landline - SBC
Area Code 510641 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510642 - BERKELEY - Landline - SBC
Area Code 510643 - EMERYVILLE - Landline - SBC
Area Code 510644 - BERKELEY - Landline - SBC
Area Code 510645 - EMERYVILLE - Landline - SBC
Area Code 510647 - BERKELEY - Landline - SBC
Area Code 510648 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510649 - BERKELEY - Landline - SBC
Area Code 510651 - NEWARK - Landline - SBC
Area Code 510652 - OAKLAND - Landline - SBC
Area Code 510653 - BERKELEY - Landline - SBC
Area Code 510654 - OAKLAND - Landline - SBC
Area Code 510655 - BERKELEY - Landline - SBC
Area Code 510656 - NEWARK - Landline - SBC
Area Code 510657 - NEWARK - Landline - SBC
Area Code 510658 - BERKELEY - Landline - SBC
Area Code 510659 - NEWARK - Landline - SBC
Area Code 510661 - NEWARK - Landline - SBC
Area Code 510662 - SAN PABLO - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510663 - OAKLAND - Landline - SBC
Area Code 510664 - BERKELEY - Landline - SBC
Area Code 510665 - BERKELEY - Landline - SBC
Area Code 510666 - BERKELEY - Landline - SBC
Area Code 510667 - SAN LEANDRO - Landline - SBC
Area Code 510668 - NEWARK - Landline - SBC
Area Code 510669 - PINOLE - Landline - SBC
Area Code 510670 - HAYWARD - Landline - SBC
Area Code 510672 - RICHMOND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510673 - FREMONT - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510675 - FREMONT - Landline - SBC
Area Code 510676 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510677 - CASTRO VALLEY - Landline - METRO PCS, INC.
Area Code 510678 - FREMONT - Landline - SBC
Area Code 510681 - OAKLAND - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510682 - FREMONT - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510683 - NEWARK - Landline - SBC
Area Code 510684 - SAN FRANCISCO - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510685 - RICHMOND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510686 - SAN LEANDRO - Landline - SBC INTERNET SERVICES, INC.
Area Code 510687 - NEWARK - Landline - SBC
Area Code 510688 - FREMONT - Landline - T-MOBILE USA, INC.
Area Code 510689 - OAKLAND - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510690 - CASTRO VALLEY - Landline - SBC
Area Code 510691 - PINOLE - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510692 - OAKLAND - Landline - METRO PCS, INC.
Area Code 510693 - MENLO PARK - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510695 - HAYWARD - - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510696 - OAKLAND - Cellphone -
Area Code 510697 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510698 - OAKLAND - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510699 - OAKLAND - Cellphone - 33 WIRELESS INC.
Area Code 510701 - HAYWARD - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510702 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510703 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510704 - BERKELEY - Landline - SBC
Area Code 510705 - BERKELEY - Landline - SBC
Area Code 510706 - CASTRO VALLEY - Cellphone - METRO PCS, INC.
Area Code 510708 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510709 - FREMONT - Landline - O1 COMMUNICATIONS, INC. - CA
Area Code 510710 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510712 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510713 - FREMONT - Landline - SBC
Area Code 510714 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510715 - OAKLAND - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510716 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510717 - BERKELEY - Cellphone - T-MOBILE USA, INC.
Area Code 510718 - CONCORD - Cellphone - COOK TELECOM, INC.
Area Code 510719 - OAKLAND - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510720 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510721 - HAYWARD - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510722 - CROCKETT - Landline - PAC - WEST TELECOMM, INC.
Area Code 510723 - HAYWARD - Landline - SBC
Area Code 510724 - HERCULES - Landline - SBC
Area Code 510725 - WALNUT CREEK - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510726 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510727 - FREMONT - Landline - SBC
Area Code 510728 - FREMONT - Landline - SBC
Area Code 510729 - OAKLAND - Landline - SBC
Area Code 510730 - SAN FRANCISCO - - BANDWIDTH.COM CLEC, LLC - CA
Area Code 510731 - HAYWARD - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510732 - HAYWARD - Landline - SBC
Area Code 510733 - FREMONT - Landline - SBC
Area Code 510734 - RICHMOND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510735 - ALAMEDA - Landline - SBC
Area Code 510739 - FREMONT - Landline - SBC
Area Code 510740 - OAKLAND - Landline - XO CALIFORNIA, INC.
Area Code 510741 - SAN PABLO - Landline - SBC
Area Code 510742 - FREMONT - Landline - SBC
Area Code 510743 - ALAMO - Landline - XO CALIFORNIA, INC.
Area Code 510744 - FREMONT - Landline - SBC
Area Code 510745 - FREMONT - Landline - SBC
Area Code 510746 - OAKLAND - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510747 - DALY CITY - Landline - SBC
Area Code 510748 - OAKLAND - Landline - SBC
Area Code 510749 - ALAMEDA - Landline - SBC
Area Code 510750 - CASTRO VALLEY - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510751 - CASTRO VALLEY - Landline - PAC - WEST TELECOMM, INC.
Area Code 510752 - EMERYVILLE - Landline - SBC
Area Code 510754 - CASTRO VALLEY - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510755 - CASTRO VALLEY - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510757 - MENLO PARK - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510758 - SAN PABLO - Landline - SBC
Area Code 510759 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510760 - HAYWARD - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510761 - EMERYVILLE - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510762 - OAKLAND - Landline -
Area Code 510763 - OAKLAND - Landline - SBC
Area Code 510764 - SAN FRANCISCO - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510765 - EL SOBRANTE - Landline - SBC
Area Code 510767 - OAKLAND - Landline -
Area Code 510768 - EMERYVILLE - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510769 - ALAMEDA - Landline - SBC
Area Code 510770 - NEWARK - Landline - SBC
Area Code 510771 - CROCKETT - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510772 - EMERYVILLE - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510773 - CASTRO VALLEY - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510774 - OAKLAND - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510776 - RICHMOND - Cellphone - METRO PCS, INC.
Area Code 510777 - SAN LEANDRO - Landline - SBC
Area Code 510778 - RICHMOND - - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510779 - EL SOBRANTE - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510780 - HAYWARD - Landline - SBC
Area Code 510781 - HAYWARD - Landline - SBC
Area Code 510782 - HAYWARD - Landline - SBC
Area Code 510783 - HAYWARD - Landline - SBC
Area Code 510784 - HAYWARD - Landline - SBC
Area Code 510785 - HAYWARD - Landline - SBC
Area Code 510786 - HAYWARD - Landline - SBC
Area Code 510787 - PORT COSTA - Landline - SBC
Area Code 510788 - EMERYVILLE - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510789 - FREMONT - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510790 - FREMONT - Landline - SBC
Area Code 510791 - FREMONT - Landline - SBC
Area Code 510792 - FREMONT - Landline - SBC
Area Code 510793 - FREMONT - Landline - SBC
Area Code 510794 - FREMONT - Landline - SBC
Area Code 510795 - FREMONT - Landline - SBC
Area Code 510796 - FREMONT - Landline - SBC
Area Code 510797 - FREMONT - Landline - SBC
Area Code 510798 - IRVINE - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510799 - RODEO - Landline - SBC
Area Code 510801 - BERKELEY - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510802 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510803 - PINOLE - Landline - XO CALIFORNIA, INC.
Area Code 510804 - OAKLAND - Cellphone -
Area Code 510805 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510807 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510808 - OAKLAND - Landline - SBC
Area Code 510809 - BERKELEY - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510810 - BERKELEY - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510812 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510813 - OAKLAND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510814 - ALAMEDA - Landline - SBC
Area Code 510815 - EL SOBRANTE - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510816 - ALAMO - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510817 - OAKLAND - Landline - SBC
Area Code 510818 - FREMONT - Landline - SBC
Area Code 510819 - OAKLAND - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510821 - LIVERMORE - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510823 - FREMONT - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510824 - FREMONT - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510825 - CONCORD - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510827 - OAKLAND - Landline - METRO PCS, INC.
Area Code 510828 - CASTRO VALLEY - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510830 - SAN RAMON - Landline - O1 COMMUNICATIONS, INC. - CA
Area Code 510832 - OAKLAND - Landline - SBC
Area Code 510834 - OAKLAND - Landline - SBC
Area Code 510835 - OAKLAND - Landline - SBC
Area Code 510836 - OAKLAND - Landline - SBC
Area Code 510837 - DANVILLE - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510839 - OAKLAND - Landline - SBC
Area Code 510840 - OAKLAND - Cellphone - AMERICAN MESSAGING (AM), INC.
Area Code 510841 - BERKELEY - Landline - SBC
Area Code 510842 - OAKLAND - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510843 - BERKELEY - Landline - SBC
Area Code 510844 - OAKLAND - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510845 - BERKELEY - Landline - SBC
Area Code 510846 - BERKELEY - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510847 - BERKELEY - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510848 - BERKELEY - Landline - SBC
Area Code 510849 - BERKELEY - Landline - SBC
Area Code 510851 - ALAMEDA - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510852 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510853 - ANTIOCH - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510854 - EL SOBRANTE - Landline - O1 COMMUNICATIONS, INC. - CA
Area Code 510855 - OAKLAND - Cellphone - THE TELEPHONE CONNECTION LOCAL SERVICES, LLC
Area Code 510856 - CASTRO VALLEY - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510857 - NEWARK - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510858 - NEWARK - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510859 - BERKELEY - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510860 - RICHMOND - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510861 - RICHMOND - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510862 - CASTRO VALLEY - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510863 - ALAMEDA - Landline - MCIMETRO ACCESS TRANSMISSION SERVICES LLC
Area Code 510864 - ALAMEDA - Landline - SBC
Area Code 510865 - ALAMEDA - Landline - SBC
Area Code 510866 - SAN FRANCISCO - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510867 - OAKLAND - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510868 - EMERYVILLE - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510869 - EMERYVILLE - Landline - SBC
Area Code 510870 - FREMONT - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510872 - CROCKETT - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510873 - SAN FRANCISCO - Landline - SBC
Area Code 510874 - OAKLAND - Landline - SBC
Area Code 510875 - OAKLAND - Landline - XO CALIFORNIA, INC.
Area Code 510877 - SAN LEANDRO - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510878 - SAN FRANCISCO - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510879 - OAKLAND - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510880 - CASTRO VALLEY - Landline - PAC - WEST TELECOMM, INC.
Area Code 510881 - FREMONT - Landline - SBC
Area Code 510882 - SAN FRANCISCO - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510883 - BERKELEY - Landline - SBC
Area Code 510884 - SAN LORENZO - Cellphone - SBC
Area Code 510885 - FREMONT - Landline - SBC
Area Code 510886 - FREMONT - Landline - SBC
Area Code 510887 - HAYWARD - Landline - SBC
Area Code 510888 - FREMONT - Landline - SBC
Area Code 510889 - FREMONT - Landline - SBC
Area Code 510891 - OAKLAND - Landline - SBC
Area Code 510892 - HAYWARD - Landline - PAC - WEST TELECOMM, INC.
Area Code 510893 - OAKLAND - Landline - SBC
Area Code 510894 - FREMONT - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510895 - SAN LEANDRO - Landline - SBC
Area Code 510896 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510897 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510898 - ALBANY - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510899 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510900 - - - CF COMMUNICATIONS, LLC DBA TELEKENEX - CA
Area Code 510902 - OAKLAND - Cellphone -
Area Code 510903 - OAKLAND - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510904 - SAN FRANCISCO - Landline - BROADWING COMMUNICATIONS, LLC - CA
Area Code 510907 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510908 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510909 - GARDEN GROVE - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510910 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510912 - OAKLAND - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510913 - EL CERRITO - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510914 - ANTIOCH - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510915 - HERCULES - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510917 - NEWARK - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510918 - SAN FRANCISCO - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510919 - FREMONT - Cellphone - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510920 - OAKLAND - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510921 - FREMONT - Landline - TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO
Area Code 510922 - EMERYVILLE - Landline - SBC
Area Code 510923 - BERKELEY - Landline - SBC
Area Code 510924 - BERKELEY - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510926 - OAKLAND - Landline - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
Area Code 510927 - WALNUT CREEK - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510928 - FREMONT - Cellphone - NEW CINGULAR WIRELESS PCS, LLC
Area Code 510929 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510931 - CASTRO VALLEY - Landline - O1 COMMUNICATIONS, INC. - CA
Area Code 510932 - CONCORD - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510933 - ALAMO - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510936 - FREMONT - Landline - SBC
Area Code 510938 - FREMONT - Cellphone - METRO PCS, INC.
Area Code 510940 - HAYWARD - Landline - MPOWER COMMUNICATIONS CORP - CA
Area Code 510943 - WALNUT CREEK - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510948 - PINOLE - Landline - XO CALIFORNIA, INC.
Area Code 510952 - FREMONT - Cellphone - NEXTEL COMMUNICATIONS, INC.
Area Code 510957 - SAN LEANDRO - Landline - ALLEGIANCE TELECOM, INC. - CA
Area Code 510962 - CASTRO VALLEY - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510964 - SAN PABLO - Landline - SBC
Area Code 510965 - RICHMOND - Landline - SBC
Area Code 510966 - FREMONT - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510967 - BERKELEY - Cellphone - SPRINT SPECTRUM L.P.
Area Code 510968 - FREMONT - Cellphone - COOK TELECOM, INC.
Area Code 510969 - OAKLAND - Landline - TW TELECOM OF CALIFORNIA LP - CA
Area Code 510970 - RICHMOND - Landline - SBC
Area Code 510972 - FREMONT - Landline - COMCAST PHONE OF CALIFORNIA, LLC - CA
Area Code 510976 - - - NORTH COUNTY COMMUNICATIONS CORP. - CA
Area Code 510977 - FREMONT - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510978 - OAKLAND - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510979 - NEWARK - Landline - SBC
Area Code 510980 - OAKLAND - Cellphone - USA MOBILITY WIRELESS, INC.
Area Code 510981 - BERKELEY - Landline - SBC
Area Code 510982 - OAKLAND - Landline - MCI WORLDCOM COMMUNICATIONS, INC., CA
Area Code 510984 - OAKLAND - Landline - LEVEL 3 COMMUNICATIONS, LLC - CA
Area Code 510985 - OAKLAND - Landline - SBC
Area Code 510986 - OAKLAND - Landline - SBC
Area Code 510987 - SAN FRANCISCO - Landline - SBC
Area Code 510991 - FREMONT - Landline - PAC - WEST TELECOMM, INC.
Area Code 510992 - OAKLAND - Landline - PAC - WEST TELECOMM, INC.
Area Code 510994 - FREMONT - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510995 - SAN FRANCISCO - Landline - U.S. TELEPACIFIC CORP. - CA
Area Code 510996 - FREMONT - Landline - GLOBAL CROSSING LOCAL SERVICES, INC.-CA
Area Code 510997 - FREMONT - Cellphone - AMERICAN MESSAGING SERVICES, LLC
Area Code 510999 - OAKLAND - Landline - CF COMMUNICATIONS, LLC DBA TELEKENEX - CA