Area
Code | Prefix | City/Switch Name
(Click for city search) | State/Prov.
Area Map | Telephone Company
Web link | Telco
Type | More
Info |
|---|
| 201 | 523 | ORADELL | New Jersey | CONVERSENT COMMUNICATIONS OF NEW JERSEY, LLC | | More |
| 202 | 523 | WSHNGTNZN1 | District of Columbia | VERIZON WASHINGTON, DC INC. | RBOC | More |
| 203 | 523 | NORWALK | Connecticut | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT | CAP | More |
| 204 | 523 | KILLARNEY | Manitoba | MTS Inc. | IND. TELCO | More |
| 205 | 523 | TUSCALOOSA | Alabama | NETWORK TELEPHONE CORPORATION - AL | | More |
| 206 | 523 | SEATTLE | Washington | QWEST CORPORATION | RBOC | More |
| 207 | 523 | PORTLAND | Maine | CTC COMMUNICATIONS CORP. - ME | CLEC | More |
| 208 | 523 | IDAHOFALLS | Idaho | QWEST CORPORATION | RBOC | More |
| 209 | 523 | MODESTO | California | PACIFIC BELL | RBOC | More |
| 210 | 523 | SANANTONIO | Texas | SOUTHWESTERN BELL | RBOC | More |
| 212 | 523 | NWYRCYZN01 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 214 | 523 | DALLAS | Texas | SOUTHWESTERN BELL | RBOC | More |
| 215 | 523 | PHLDLPHZN1 | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 216 | 523 | CLEVELAND | Ohio | AMERITECH OHIO | RBOC | More |
| 217 | 523 | SPRINGFLD | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 218 | 523 | VIKING | Minnesota | WIKSTROM TELEPHONE CO., INC. | IND. TELCO | More |
| 224 | 523 | ELGIN | Illinois | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 226 | 523 | Blyth | Ontario | Tuckersmith Communications Co-operative Ltd. | | More |
| 228 | 523 | BILOXI | Mississippi | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 229 | 523 | OCILLA | Georgia | US LEC OF GEORGIA, INC. | CLEC | More |
| 240 | 523 | LA PLATA | District of Columbia | XO MARYLAND, LLC | CLEC | More |
| 248 | 523 | FARMINGTON | Michigan | AMERICAN MESSAGING (AM), INC. | | More |
| 250 | 523 | LOGAN LAKE | British Columbia | TELUS | IND. TELCO | More |
| 252 | 523 | KINSTON | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 254 | 523 | WACO | Texas | BROOKS FIBER PROPERTIES OF TEXAS - TX | CLEC | More |
| 256 | 523 | SAND ROCK | Alabama | PEOPLES TELEPHONE CO., INC. | IND. TELCO | More |
| 262 | 523 | WAUKESHA | Wisconsin | AMERITECH WISCONSIN | RBOC | More |
| 267 | 523 | PHPHSBZN41 | Pennsylvania | GLOBAL CROSSING LOCAL SERVICES, INC.-PA | CLEC | More |
| 270 | 523 | UTICA | Kentucky | SBC INTERNET SERVICES, INC. | | More |
| 276 | 523 | BIGSTONEGP | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 281 | 523 | KEMAH | Texas | GTE-SW DBA VERIZON SW INC.-TX | IND. TELCO | More |
| 301 | 523 | WSHNGTNZN3 | Maryland | SPRINT SPECTRUM L.P. | PCS | More |
| 302 | 523 | WILMINGTON | Delaware | REDI-CALL COMMUNICATIONS CO | WIRELESS PROV | More |
| 303 | 523 | DENVER | Colorado | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 304 | 523 | HNTNGTNZN1 | West Virginia | FRONTIER WEST VIRGINIA INC. | RBOC | More |
| 305 | 523 | MIAMI | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 306 | 523 | Regina | Saskatchewan | SaskTel | IND. TELCO | More |
| 308 | 523 | CHADRON | Nebraska | SAGIR, INC. | | More |
| 309 | 523 | PORT BYRON | Illinois | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | | More |
| 310 | 523 | CMTN GRDN | California | PACIFIC BELL | RBOC | More |
| 312 | 523 | CHICGOZN01 | Illinois | SPRINT SPECTRUM L.P. | PCS | More |
| 313 | 523 | DETROITZN6 | Michigan | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC | | More |
| 314 | 523 | CREVECOEUR | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 315 | 523 | WATERTOWN | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 316 | 523 | WICHITA | Kansas | SOUTHWESTERN BELL | RBOC | More |
| 317 | 523 | INDIANAPLS | Indiana | SPRINT SPECTRUM L.P. | PCS | More |
| 318 | 523 | HOMER | Louisiana | LEVEL 3 COMMUNICATIONS, LLC - LA | | More |
| 319 | 523 | WAPELLO | Iowa | WINDSTREAM IOWA COMMUNICATIONS, INC. | | More |
| 320 | 523 | OLIVIA | Minnesota | QWEST CORPORATION | RBOC | More |
| 323 | 523 | LSAN DA 06 | California | MPOWER COMMUNICATIONS CORP - CA | CLEC | More |
| 330 | 523 | RICHFIELD | Ohio | WINDSTREAM WESTERN RESERVE, INC. | IND. TELCO | More |
| 334 | 523 | MONTGOMERY | Alabama | MCI WORLDCOM COMMUNICATIONS, INC. - AL | CLEC | More |
| 336 | 523 | ASHEBORO | North Carolina | RANDOLPH TELEPHONE TELECOMMUNICATIONS, INC. - NC | | More |
| 337 | 523 | ABBEVILLE | Louisiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA | WIRELESS PROV | More |
| 347 | 523 | NWYRCYZN03 | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 352 | 523 | DADE CITY | Florida | EMBARQ FLORIDA, INC. DBA CENTURYLINK | IND. TELCO | More |
| 360 | 523 | CENTRALIA | Washington | INTERNATIONAL TELCOM, LTD. - WA | CLEC | More |
| 361 | 523 | INGLESIDE | Texas | SPRINT SPECTRUM L.P. | PCS | More |
| 386 | 523 | DAYTONABCH | Florida | NUVOX COMMUNICATIONS | CLEC | More |
| 401 | 523 | PROVIDENCE | Rhode Island | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 402 | 523 | TAMORA | Nebraska | WINDSTREAM NEBRASKA, INC. | IND. TELCO | More |
| 403 | 523 | HIGH PRAIRIE | Alberta | TELUS | IND. TELCO | More |
| 404 | 523 | ATLANTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 405 | 523 | OKLA CITY | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 406 | 523 | MISSOULA | Montana | QWEST CORPORATION | RBOC | More |
| 407 | 523 | ORLANDO | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 408 | 523 | SUNNYVALE | California | PACIFIC BELL | RBOC | More |
| 410 | 523 | BALTIMORE | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 412 | 523 | PTTSBGZON1 | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 413 | 523 | SPRINGFLD | Massachusetts | PAETEC COMMUNICATIONS, INC. | CLEC | More |
| 414 | 523 | SOUTHEAST WISCONSIN | Wisconsin | AT&T - LOCAL - IN | CLEC | More |
| 415 | 523 | SNFC CNTRL | California | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | | More |
| 416 | 523 | TORONTO | Ontario | Bell Mobility | WIRELESS PROV | More |
| 417 | 523 | SPRINGFLD | Missouri | BROOKS FIBER COMMUNICATIONS - MO | CLEC | More |
| 418 | 523 | QUEBEC | Quebec | Bell Canada | IND. TELCO | More |
| 419 | 523 | OTTAWA | Ohio | UNITED TEL. CO. OF OHIO - CENTURYLINK | IND. TELCO | More |
| 423 | 523 | BULLS GAP | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 424 | 523 | CULVERCITY | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 425 | 523 | RENTON | Washington | XO WASHINGTON, INC. | CAP | More |
| 432 | 523 | ANDREWS | Texas | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | | More |
| 440 | 523 | CLEVELAND | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 443 | 523 | SALISBURY | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 450 | 523 | St-Jean | Quebec | Bell Mobility | WIRELESS PROV | More |
| 469 | 523 | CEDAR HILL | Texas | CBEYOND COMMUNICATIONS OF TEXAS, LP-TX | | More |
| 480 | 523 | PHOENIX | Arizona | QWEST CORPORATION | RBOC | More |
| 484 | 523 | PHILADELPHIA SUBURB | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 501 | 523 | SCOTT | Arkansas | WINDSTREAM NUVOX ARKANSAS, INC. - AR | CLEC | More |
| 502 | 523 | LOUISVILLE | Kentucky | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | WIRELESS PROV | More |
| 503 | 523 | BEAVERTON | Oregon | GLOBAL CROSSING LOCAL SERVICES,INC.-OR | CLEC | More |
| 504 | 523 | NEWORLEANS | Louisiana | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 505 | 523 | LAS CRUCES | New Mexico | QWEST CORPORATION | RBOC | More |
| 506 | 523 | RICHIBUCTO | New Brunswick | Aliant Telecom(NB) | IND. TELCO | More |
| 507 | 523 | LEWISTON | Minnesota | EMBARQ MINNESOTA DBA CENTURYLINK | IND. TELCO | More |
| 508 | 523 | SHREWSBURY | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 509 | 523 | ROSALIA | Washington | FRONTIER COMMUNICATIONS NORTHWEST INC. - WA | IND. TELCO | More |
| 510 | 523 | OKLD ALMD | California | PACIFIC BELL | RBOC | More |
| 512 | 523 | BUDA | Texas | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | CLEC | More |
| 513 | 523 | OXFORD | Ohio | FRONTIER NORTH, INC. - OH | IND. TELCO | More |
| 514 | 523 | MONTREAL | Quebec | Bell Canada | IND. TELCO | More |
| 515 | 523 | STUART | Iowa | QWEST CORPORATION | RBOC | More |
| 516 | 523 | NASSAUZN05 | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 517 | 523 | OSSEO | Michigan | FRONTIER COMMUNICATIONS OF MICHIGAN, INC. | IND. TELCO | More |
| 518 | 523 | LAKEPLACID | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 519 | 523 | BLYTH | Ontario | Bell Canada | IND. TELCO | More |
| 520 | 523 | FLAGSTAFF | Arizona | QWEST CORPORATION | RBOC | More |
| 530 | 523 | HOMEWOOD | California | TELEPORT COMMUNICATIONS GROUP - SAN FRANCISCO | CLEC | More |
| 540 | 523 | ROANOKE | Virginia | CAVALIER TELEPHONE, LLC | CLEC | More |
| 541 | 523 | BAKER | Oregon | QWEST CORPORATION | RBOC | More |
| 559 | 523 | PIXLEY | California | PAC - WEST TELECOMM, INC. | CLEC | More |
| 561 | 523 | BOYNTONBCH | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 567 | 523 | NORTH STAR | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 570 | 523 | LEWISBURG | Pennsylvania | WINDSTREAM BUFFALO VALLEY, INC. | IND. TELCO | More |
| 571 | 523 | HERNDON | Virginia | URBAN MEDIA OF VA | | More |
| 573 | 523 | PIEDMONT | Missouri | WINDSTREAM MISSOURI, INC. | IND. TELCO | More |
| 574 | 523 | ELKHART | Indiana | FRONTIER NORTH, INC. - IN | IND. TELCO | More |
| 575 | 523 | LAS CRUCES | New Mexico | QWEST CORPORATION | RBOC | More |
| 580 | 523 | TYRONE | Oklahoma | PANHANDLE TELECOMMUNICATIONS SYSTEMS, INC. | | More |
| 585 | 523 | W WEBSTER | New York | XO NEW YORK, INC. | CLEC | More |
| 587 | 523 | Edmonton | Alberta | Shaw Telecom Inc. | | More |
| 601 | 523 | WIGGINS | Mississippi | TELEPAK NETWORKS, INC. - MS | | More |
| 602 | 523 | PHOENIX | Arizona | QWEST CORPORATION | RBOC | More |
| 603 | 523 | CANAAN | New Hampshire | NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH | RBOC | More |
| 604 | 523 | NEW WESTMINISTER | British Columbia | TELUS | IND. TELCO | More |
| 605 | 523 | CANOVA | South Dakota | MCCOOK COOPERATIVE TELEPHONE COMPANY | IND. TELCO | More |
| 606 | 523 | CORBIN | Kentucky | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 607 | 523 | LINDLEY | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 608 | 523 | BLANCHADVL | Wisconsin | UTELCO, INC. | IND. TELCO | More |
| 609 | 523 | WILDWOOD | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 610 | 523 | PHPHSBZN25 | Pennsylvania | MCI WORLDCOM COMMUNICATIONS, INC. - PA | CLEC | More |
| 613 | 523 | OTTAWA | Ontario | Bell Canada | IND. TELCO | More |
| 614 | 523 | WESTERVL | Ohio | AMERITECH OHIO | RBOC | More |
| 615 | 523 | NASHVILLE | Tennessee | XO TENNESSEE, INC. | CAP | More |
| 616 | 523 | IONIA | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 617 | 523 | BOSTON | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 618 | 523 | GERMANTOWN | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 619 | 523 | SNDG SNDG | California | PACIFIC BELL | RBOC | More |
| 620 | 523 | DODGE CITY | Kansas | UNITED WIRELESS COMMUNICATIONS, INC. - KS | | More |
| 623 | 523 | PHOENIX | Arizona | QWEST CORPORATION | RBOC | More |
| 626 | 523 | COVINA | California | SPRINT SPECTRUM L.P. | PCS | More |
| 630 | 523 | ROSELLE | Illinois | OVATION COMMUNICATIONS OF ILLINOIS, INC. | CLEC | More |
| 631 | 523 | WESTBURY | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 641 | 523 | KANAWHA | Iowa | MCC TELEPHONY OF IOWA, LLC - IA | | More |
| 646 | 523 | NEW YORK CITY ZONE | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 647 | 523 | Toronto | Ontario | Bell Mobility | WIRELESS PROV | More |
| 650 | 523 | OAKLAND | California | PAC - WEST TELECOMM, INC. | CLEC | More |
| 651 | 523 | STPZ 2 | Minnesota | QWEST CORPORATION | RBOC | More |
| 660 | 523 | HURDLAND | Missouri | CROSSROADS WIRELESS, INC. | | More |
| 661 | 523 | SNCA SGCC | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 662 | 523 | TUPELO | Mississippi | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 678 | 523 | ATLANTA | Georgia | SPRINT SPECTRUM L.P. | PCS | More |
| 701 | 523 | BOWMAN | North Dakota | CONSOLIDATED TELCOM | IND. TELCO | More |
| 702 | 523 | LAS VEGAS | Nevada | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 703 | 523 | WASHINGTON ZONE 8 | Maryland | COX VIRGINIA TELCOM, INC. - VA | CLEC | More |
| 704 | 523 | CHARLOTTE | North Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 705 | 523 | SUDBURY | Ontario | Bell Canada | IND. TELCO | More |
| 706 | 523 | PINE MOUNTAIN | Georgia | SPRINT SPECTRUM L.P. | PCS | More |
| 707 | 523 | SANTA ROSA | California | PACIFIC BELL | RBOC | More |
| 708 | 523 | OAKBROOK | Illinois | TELEPORT COMMUNICATIONS GROUP - CHICAGO | CAP | More |
| 709 | 523 | Hare Bay | Newfoundland | Bragg Communications Inc. | CLEC | More |
| 712 | 523 | BEDFORD | Iowa | FRONTIER COMMUNICATIONS OF IOWA, INC. | IND. TELCO | More |
| 713 | 523 | HOUSTON JACKSON | Texas | SOUTHWESTERN BELL | RBOC | More |
| 714 | 523 | BUENA PARK | California | PACIFIC BELL | RBOC | More |
| 715 | 523 | EAU CLAIRE | Wisconsin | AERIAL COMMUNICATIONS | WIRELESS PROV | More |
| 716 | 523 | TONAWANDA | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 717 | 523 | TOWER CITY | Pennsylvania | CORE COMMUNICATIONS, INC. - PA | | More |
| 718 | 523 | NYCZ 10 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 719 | 523 | SPRINGFIELD | Colorado | CENTURYTEL OF EAGLE, INC. DBA CENTRUYLINK | IND. TELCO | More |
| 720 | 523 | BRIGHTON | Colorado | QWEST CORPORATION | RBOC | More |
| 724 | 523 | JEANNETTE | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 727 | 523 | CLEARWATER | Florida | VERIZON FLORIDA INC. | IND. TELCO | More |
| 732 | 523 | SPRING LAKE | New Jersey | BANDWIDTH.COM CLEC, LLC - NJ | | More |
| 734 | 523 | LIVONIA | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 740 | 523 | IRONTON | Ohio | ARMSTRONG TELECOMMUNICATIONS, INC. - OH | | More |
| 757 | 523 | NFKZ 2 | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 760 | 523 | RIVERSIDE | California | MPOWER NETWORKS SERVICES INC. - CA | | More |
| 765 | 523 | CLARKS HILL | Indiana | FRONTIER COMMUNICATIONS OF THORNTOWN, INC. | IND. TELCO | More |
| 770 | 523 | TUCKER | Georgia | AMERICAN MESSAGING (AM), INC. | | More |
| 773 | 523 | CHCZ 6 | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 778 | 523 | Canal Flats | British Columbia | Shaw Telecom Inc. | | More |
| 780 | 523 | HIGH PRAIRIE | Alberta | TELUS | IND. TELCO | More |
| 781 | 523 | NEEDHAM | Massachusetts | COMCAST PHONE OF MASSACHUSETTS, INC. - MA | CLEC | More |
| 785 | 523 | DELPHOS | Kansas | TWIN VALLEY TELEPHONE, INC. | IND. TELCO | More |
| 786 | 523 | MIAMI | Florida | METRO PCS, INC. | | More |
| 787 | 523 | SANTURCE | Puerto Rico | CENTENNIAL PUERTO RICO OPERATIONS CORP. - PR | CLEC | More |
| 801 | 523 | MIDVALE | Utah | QWEST CORPORATION | RBOC | More |
| 803 | 523 | BATH | Georgia | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 804 | 523 | RICHMOND | Virginia | TELCOVE OF VIRGINIA, LLC - VA | CLEC | More |
| 805 | 523 | MOORPARK | California | PACIFIC BELL | RBOC | More |
| 806 | 523 | LUBBOCK | Texas | PLATEAU TELECOMMUNICATIONS, INC. | WIRELESS PROV | More |
| 808 | 523 | HONOLULU | Hawaii | HAWAIIAN TELCOM, INC. - HI | IND. TELCO | More |
| 810 | 523 | SOUTHFIELD | Michigan | SPRINT SPECTRUM L.P. | PCS | More |
| 812 | 523 | SEYMOUR | Indiana | FRONTIER NORTH, INC. - IN | IND. TELCO | More |
| 813 | 523 | TAMPA | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 814 | 523 | PATTON | Pennsylvania | TELCOVE OF PENNSYLVANIA, INC. - PA | CLEC | More |
| 815 | 523 | OAKBROOK | Illinois | TELEPORT COMMUNICATIONS GROUP - CHICAGO | CAP | More |
| 816 | 523 | KANSAS CITY HIGHLAN | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 817 | 523 | SPRINGTOWN | Texas | GTE-SW DBA VERIZON SW INC.-TX (CONTEL) | IND. TELCO | More |
| 818 | 523 | SHERMAN OAKS | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 819 | 523 | LA TUQUE | Quebec | Telebec Ltee. | IXC | More |
| 828 | 523 | GRANITEFLS | North Carolina | LEVEL 3 COMMUNICATIONS, LLC - NC | | More |
| 832 | 523 | HOUSTON | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 843 | 523 | MCCOLL | South Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 845 | 523 | CONGERS | New York | XO NEW YORK, INC. | CLEC | More |
| 847 | 523 | LIBERTYVILLE | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 848 | 523 | NEW BRUNSWICK | New Jersey | CLEVELAND UNLIMITED, INC. | PCS | More |
| 850 | 523 | TALLAHASSEE | Florida | EMBARQ FLORIDA INC. (CENTRAL) DBA CENTURYLINK | IND. TELCO | More |
| 857 | 523 | SOMERVILLE | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 858 | 523 | DEL MAR | California | PACIFIC BELL | RBOC | More |
| 859 | 523 | LEXINGTON | Kentucky | TIME WARNER CBL INFO SV (KY) DBA TIME WARNER-KY | | More |
| 860 | 523 | WEST HARTFORD | Connecticut | SOUTHERN NEW ENGLAND TELEPHONE CO. | IND. TELCO | More |
| 863 | 523 | ARCADIA | Florida | NOVUS COMMUNICATIONS, INC. - FL | | More |
| 864 | 523 | UNION | South Carolina | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 865 | 523 | KNOXVILLE | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 870 | 523 | NEWPORT | Arkansas | SOUTHWESTERN BELL | RBOC | More |
| 901 | 523 | MEMPHIS | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 902 | 523 | Bridgewater | Nova Scotia | Aliant Telecom (Mobility) | | More |
| 903 | 523 | GORDONVILLE | Texas | GTE-SW DBA VERIZON SW INC.-TX | IND. TELCO | More |
| 905 | 523 | HAMILTON | Ontario | Bell Canada | IND. TELCO | More |
| 906 | 523 | CHASSEL | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 907 | 523 | JUNEAU | Alaska | GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION | CLEC | More |
| 908 | 523 | LINDEN | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 909 | 523 | CLAREMONT-SAN DIMAS | California | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 910 | 523 | WILMINGTON | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 912 | 523 | GLENWOOD | Georgia | GLENWOOD TELEPHONE CO. | IND. TELCO | More |
| 913 | 523 | OVERLAND PARK | Kansas | SOUTHWESTERN BELL | RBOC | More |
| 914 | 523 | WESTCHESTER ZONE 8 | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 915 | 523 | ANDREWS | Texas | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | | More |
| 916 | 523 | SACRAMENTO: MAIN DA | California | AMERICAN MESSAGING (AM), INC. | | More |
| 917 | 523 | MANHATTAN | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 918 | 523 | TULSA | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 919 | 523 | RALEIGH | North Carolina | SUNCOM DBA T-MOBILE USA | PCS | More |
| 920 | 523 | CASCADE | Wisconsin | LEVEL 3 COMMUNICATIONS, LLC - WI | | More |
| 925 | 523 | PLEASANTON | California | PACIFIC BELL | RBOC | More |
| 928 | 523 | FLAGSTAFF | Arizona | QWEST CORPORATION | RBOC | More |
| 936 | 523 | CONROE | Texas | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY | IND. TELCO | More |
| 937 | 523 | DAYTON | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 940 | 523 | VERNON | Texas | WEB FIRE COMMUNICATIONS, INC. - TX | | More |
| 949 | 523 | SADLBK VLY | California | TELEPORT COMMUNICATIONS GROUP - LOS ANGELES | CLEC | More |
| 951 | 523 | CORONA | California | TW TELECOM OF CALIFORNIA LP - CA | CLEC | More |
| 954 | 523 | FORT LAUDERDALE | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 956 | 523 | LAREDO | Texas | SOUTHWESTERN BELL | RBOC | More |
| 970 | 523 | GRAND JUNCTION | Colorado | QWEST CORPORATION | RBOC | More |
| 972 | 523 | GRAND PRAIRIE | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 973 | 523 | PATERSON ARMORY | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 978 | 523 | MARLBOROUGH | Massachusetts | TELEPORT COMMUNICATIONS GROUP - BOSTON | CAP | More |
| 980 | 523 | CHARLOTTE | North Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 989 | 523 | OSSEO | Michigan | KMC TELECOM V, INC. - MI | | More |
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