Area
Code | Prefix | City/Switch Name
(Click for city search) | State/Prov.
Area Map | Telephone Company
Web link | Telco
Type | More
Info |
|---|
| 201 | 423 | JERSEYCITY | New Jersey | OMNIPOINT COMMUNICATIONS, INC. - NJ | WIRELESS PROV | More |
| 202 | 423 | WSHNGTNZN1 | Maryland | METROPCS, INC. | | More |
| 203 | 423 | WILTON | Connecticut | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | CAP | More |
| 204 | 423 | PINEY | Manitoba | MTS Inc. | IND. TELCO | More |
| 205 | 423 | BIRMINGHAM | Alabama | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 206 | 423 | SEATTLE | Washington | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 207 | 423 | BIDDEFORD | Maine | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 208 | 423 | TWIN FALLS | Idaho | QWEST CORPORATION | RBOC | More |
| 209 | 423 | STOCKTON | California | METROPCS, INC. | | More |
| 210 | 423 | SANANTONIO | Texas | SOUTHWESTERN BELL | RBOC | More |
| 212 | 423 | NWYRCYZN02 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 213 | 423 | LSAN DA 10 | California | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | | More |
| 214 | 423 | FRISCO | Texas | LOGIX COMMUNICATIONS CORPORATION - TX | CLEC | More |
| 215 | 423 | PHLDLPHZN1 | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 216 | 423 | CLEVELAND | Ohio | WAVENATION, LLC | | More |
| 217 | 423 | DECATUR | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 218 | 423 | STURGEONLK | Minnesota | ONVOY, LLC - MN | | More |
| 223 | 423 | ICKESBURG | Pennsylvania | ONVOY, LLC - PA | | More |
| 224 | 423 | DESPLAINES | Illinois | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | WIRELESS PROV | More |
| 225 | 423 | FRENCHSMNT | Louisiana | CHARTER FIBERLINK LA-CCO, LLC - LA | | More |
| 226 | 423 | Exeter | Ontario | Bragg Communications Inc. | CLEC | More |
| 229 | 423 | FITZGERALD | Georgia | WINDSTREAM GEORGIA COMMUNICATIONS CORP. | IND. TELCO | More |
| 231 | 423 | EVART | Michigan | BANDWIDTH.COM CLEC, LLC - MI | | More |
| 234 | 423 | WILMOT | Ohio | TIME WARNER CABLE INFORMATION SVCS (OHIO) - OH | | More |
| 239 | 423 | NAPLES | Florida | NUSO, LLC | | More |
| 240 | 423 | WSHNGTNZN3 | Virginia | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | WIRELESS PROV | More |
| 248 | 423 | SOUTHFIELD | Michigan | MICHIGAN BELL TEL CO | RBOC | More |
| 250 | 423 | FERNIE | British Columbia | TELUS | IND. TELCO | More |
| 251 | 423 | MOBILE | Alabama | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | WIRELESS PROV | More |
| 252 | 423 | MANTEO | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 253 | 423 | TACOMA | Washington | ONVOY, LLC - WA | | More |
| 254 | 423 | KILLEEN | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 256 | 423 | ARDMORE | Alabama | ARDMORE TEL. CO., INC. | IND. TELCO | More |
| 260 | 423 | FORT WAYNE | Indiana | FRONTIER NORTH, INC.. - IN | IND. TELCO | More |
| 262 | 423 | JACKSON | Wisconsin | GLOBAL CROSSING TELEMANAGEMENT, INC. - WI | CLEC | More |
| 267 | 423 | PHLDLPHZN4 | Pennsylvania | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | WIRELESS PROV | More |
| 269 | 423 | DECATUR | Michigan | FRONTIER NORTH, INC. - MI | IND. TELCO | More |
| 270 | 423 | EDDYVILLE | Kentucky | ONVOY, LLC - KY | | More |
| 281 | 423 | BAMMEL | Texas | SOUTHWESTERN BELL | RBOC | More |
| 289 | 423 | Ajax-Pickering | Ontario | TELUS Mobility | PCS | More |
| 301 | 423 | WSHNGTNZN5 | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 302 | 423 | DOVER | Delaware | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 303 | 423 | DENVER | Colorado | QWEST CORPORATION | RBOC | More |
| 304 | 423 | CLARKSBURG | West Virginia | CITYNET WEST VIRGINIA, LLC - WV | | More |
| 305 | 423 | MIAMI | Florida | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | CLEC | More |
| 306 | 423 | DOMREMY | Saskatchewan | SaskTel | IND. TELCO | More |
| 307 | 423 | BUFFALO | Wyoming | BANDWIDTH.COM CLEC, LLC - WY | | More |
| 308 | 423 | BENKELMAN | Nebraska | BENKELMAN TEL. CO., INC. | IND. TELCO | More |
| 309 | 423 | PEORIA | Illinois | LEVEL 3 COMMUNICATIONS, LLC - IL | CLEC | More |
| 310 | 423 | BEVERLYHLS | California | PACIFIC BELL | RBOC | More |
| 312 | 423 | CHICGOZN01 | Illinois | LEVEL 3 COMMUNICATIONS, LLC - IL | CLEC | More |
| 313 | 423 | DETROITZN2 | Michigan | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | | More |
| 314 | 423 | LADUE | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 315 | 423 | SYRACUSE | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 317 | 423 | INDIANAPLS | Indiana | INDIANA BELL TEL CO INC | RBOC | More |
| 318 | 423 | SHREVEPORT | Louisiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA | WIRELESS PROV | More |
| 319 | 423 | CLERMONT | Iowa | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | CLEC | More |
| 320 | 423 | ST CLOUD | Minnesota | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | | More |
| 321 | 423 | COCOA | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 323 | 423 | LSAN DA 03 | California | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | CLEC | More |
| 325 | 423 | LLANO | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 330 | 423 | YOUNGSTOWN | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 334 | 423 | WEST POINT | Alabama | ONVOY, LLC - AL | | More |
| 336 | 423 | KERNERSVL | North Carolina | LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC | CLEC | More |
| 337 | 423 | LEESVILLE | Louisiana | LEVEL 3 COMMUNICATIONS, LLC - LA | | More |
| 340 | 423 | CHTAMSTTHS | Virgin Islands | VITELCOM CELLULAR, INC. | | More |
| 346 | 423 | PORTER | Texas | COMCAST IP PHONE, LLC | | More |
| 347 | 423 | NWYRCYZN06 | New York | METROPCS, INC. | | More |
| 352 | 423 | INVERNESS | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 360 | 423 | LONGVIEW | Washington | QWEST CORPORATION | RBOC | More |
| 361 | 423 | MOULTON | Texas | BANDWIDTH.COM CLEC, LLC - TX | | More |
| 385 | 423 | SALEM | Utah | COMCAST IP PHONE, LLC | | More |
| 386 | 423 | NWSMYRNBCH | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 401 | 423 | JAMESTOWN | Rhode Island | VERIZON NEW ENGLAND INC. | RBOC | More |
| 402 | 423 | LINCOLN | Nebraska | WINDSTREAM NEBRASKA, INC. | IND. TELCO | More |
| 403 | 423 | EDMONTON | Alberta | Rogers Communications Partnership (Wireless) | WIRELESS PROV | More |
| 404 | 423 | ATLANTA | Georgia | POWERTEL ATLANTA LICENSES, INC. | WIRELESS PROV | More |
| 405 | 423 | OKLAHOMA CITY | Oklahoma | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | | More |
| 406 | 423 | HOBSON | Montana | TRIANGLE TEL. COOP. ASSN., INC. | IND. TELCO | More |
| 407 | 423 | ORLANDO | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 408 | 423 | SNJS WEST | California | PACIFIC BELL | RBOC | More |
| 409 | 423 | KIRBYVILLE | Texas | SOUTHWESTERN BELL | RBOC | More |
| 410 | 423 | COLUMBIA | Maryland | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | CAP | More |
| 412 | 423 | PTGSBNZN20 | Pennsylvania | CONSOLIDATED COMMUNICATIONS ENTERPRISE SERVICES-PA | CLEC | More |
| 413 | 423 | MILLERSFLS | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 414 | 423 | MILWAUKZN3 | Wisconsin | WISCONSIN BELL INC | RBOC | More |
| 415 | 423 | SNFC CNTRL | California | CENTURYLINK COMMUNICATIONS LLC | CLEC | More |
| 415 | 423 | SNFC CNTRL | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 416 | 423 | TORONTO | Ontario | Bell Canada | IND. TELCO | More |
| 417 | 423 | CARTHAGE | Missouri | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 418 | 423 | BLACK LAKE | Quebec | Bell Canada | IND. TELCO | More |
| 419 | 423 | FINDLAY | Ohio | OHIO BELL TEL CO | RBOC | More |
| 424 | 423 | EL SEGUNDO | California | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | CLEC | More |
| 425 | 423 | EVERETT | Washington | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | IND. TELCO | More |
| 432 | 423 | FTSTOCKTON | Texas | ONVOY, LLC - TX | | More |
| 434 | 423 | BACHESHALL | Virginia | COMCAST IP PHONE, LLC | | More |
| 440 | 423 | GATESMILLS | Ohio | OHIO BELL TEL CO | RBOC | More |
| 442 | 423 | LKISABELLA | California | TWILIO INTERNATIONAL, INC. | | More |
| 443 | 423 | BALTIMORE | Maryland | LEVEL 3 COMMUNICATIONS, LLC - MD | CLEC | More |
| 450 | 423 | St-Jude | Quebec | Telecommunications Xittel Inc | | More |
| 469 | 423 | BLUE RIDGE | Texas | ONVOY, LLC - TX | | More |
| 470 | 423 | ATLANTA | Georgia | LEVEL 3 COMMUNICATIONS, LLC - GA | CLEC | More |
| 479 | 423 | BENTONVL | Arkansas | TELEPORT COMMUNICATIONS AMERICA, LLC - AR | | More |
| 480 | 423 | PHOENIX | Arizona | QWEST CORPORATION | RBOC | More |
| 484 | 423 | PHPHSBZN22 | Pennsylvania | LEVEL 3 COMMUNICATIONS, LLC - PA | CLEC | More |
| 501 | 423 | LITTLEROCK | Arkansas | LEVEL 3 COMMUNICATIONS, LLC - AR | | More |
| 502 | 423 | LOUISVILLE | Kentucky | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 503 | 423 | PORTLAND | Oregon | QWEST CORPORATION | RBOC | More |
| 504 | 423 | NEW ORLEANS | Louisiana | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 505 | 423 | BINGHAM | New Mexico | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 506 | 423 | ST LEONARD | New Brunswick | Aliant Telecom(NB) | IND. TELCO | More |
| 507 | 423 | COTTONWOOD | Minnesota | CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | | More |
| 508 | 423 | BILLERICA | Massachusetts | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 509 | 423 | WENATCHEE | Washington | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | | More |
| 510 | 423 | OKLD BKLY | California | PAETEC COMMUNICATIONS, INC. - CA | CLEC | More |
| 512 | 423 | AUSTIN | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 513 | 423 | MIDDLETOWN | Ohio | OHIO BELL TEL CO | RBOC | More |
| 514 | 423 | MONTREAL | Quebec | Bell Canada | IND. TELCO | More |
| 515 | 423 | MASON CITY | Iowa | BANDWIDTH.COM CLEC, LLC - IA | | More |
| 516 | 423 | NASSAUZN01 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 517 | 423 | TECUMSEH | Michigan | FRONTIER NORTH, INC. - MI | IND. TELCO | More |
| 518 | 423 | ALBANY | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 519 | 423 | BEACHVILLE | Ontario | Bell Canada | IND. TELCO | More |
| 520 | 423 | CASAGRANDE | Arizona | QWEST CORPORATION | RBOC | More |
| 530 | 423 | WEAVERVL | California | LEVEL 3 COMMUNICATIONS, LLC - CA | CLEC | More |
| 540 | 423 | CULPEPER | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 541 | 423 | CENTRAL PT | Oregon | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | CLEC | More |
| 559 | 423 | LEMOORE | California | IP HORIZON LLC | | More |
| 561 | 423 | BOYNTONBCH | Florida | XO FLORIDA, INC. | CLEC | More |
| 562 | 423 | LONG BEACH | California | FRONTIER CALIFORNIA INC. | IND. TELCO | More |
| 563 | 423 | CLERMONT | Iowa | ACE TEL. ASSN. - IA | IND. TELCO | More |
| 567 | 423 | PERRYSVL | Ohio | CENTURYLINK COMMUNICATIONS, LLC | | More |
| 570 | 423 | SAYRE | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 571 | 423 | WSNGTNZN17 | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 573 | 423 | BELLEVIEW | Missouri | ONVOY, LLC - MO | | More |
| 575 | 423 | BINGHAM | New Mexico | E.N.M.R. TEL COOP | IND. TELCO | More |
| 580 | 423 | TEXHOMA | Oklahoma | PANHANDLE TELEPHONE COOPERATIVE, INC. | IND. TELCO | More |
| 581 | 423 | Sainte-Henedine | Quebec | Telecommunications Xittel Inc | | More |
| 585 | 423 | ROCHESTER | New York | FRONTIER TELEPHONE OF ROCHESTER, INC. | IND. TELCO | More |
| 601 | 423 | MAGEE | Mississippi | TELEPAK NETWORKS, INC. - MS | | More |
| 602 | 423 | PHOENIX | Arizona | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 603 | 423 | MERRIMACK | New Hampshire | CONSOLIDATED COMM OF NO. NEW ENGLAND-NH | RBOC | More |
| 605 | 423 | STURGIS | South Dakota | QWEST CORPORATION | RBOC | More |
| 606 | 423 | SCIENCE HL | Kentucky | WINDSTREAM KENTUCKY EAST, INC. - LONDON | | More |
| 607 | 423 | CORTLAND | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 608 | 423 | CAMBRIDGE | Wisconsin | FRONTIER NORTH INC. - WI | IND. TELCO | More |
| 609 | 423 | PRINCETON | New Jersey | YMAX COMMUNICATIONS CORP. - NJ | | More |
| 610 | 423 | EXTON | Pennsylvania | ATX TELECOMMUNICATIONS SERVICES, LTD. - PA | CLEC | More |
| 612 | 423 | TWINCITIES | Minnesota | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 613 | 423 | Brockville | Ontario | Telnet Communications | | More |
| 614 | 423 | WESTERVL | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 615 | 423 | NASHVILLE | Tennessee | POWERTEL NASHVILLE LICENSES, INC. | WIRELESS PROV | More |
| 616 | 423 | DECATUR | Michigan | FRONTIER NORTH, INC. - MI | IND. TELCO | More |
| 617 | 423 | BOSTON | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 618 | 423 | RAMSEY | Illinois | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | | More |
| 619 | 423 | CHULAVISTA | California | PACIFIC BELL | RBOC | More |
| 620 | 423 | PARSONS | Kansas | SOUTHWESTERN BELL | RBOC | More |
| 626 | 423 | EL MONTE | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 630 | 423 | AURORA | Illinois | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | CAP | More |
| 631 | 423 | HUNTINGTON | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 641 | 423 | MASON CITY | Iowa | QWEST CORPORATION | RBOC | More |
| 646 | 423 | NWYRCYZN01 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 650 | 423 | OAKLAND | California | UTILITY TELECOM GROUP, LLC - CA | | More |
| 651 | 423 | ROSEMOUNT | Minnesota | FRONTIER COMMUNICATIONS OF MINNESOTA, INC. | IND. TELCO | More |
| 657 | 423 | SILVERADO | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 660 | 423 | HURDLAND | Missouri | MARK TWAIN RURAL TEL. CO. | IND. TELCO | More |
| 661 | 423 | LANCASTER | California | FRONTIER CALIFORNIA INC. | IND. TELCO | More |
| 662 | 423 | IUKA | Mississippi | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 667 | 423 | ANNAPOLIS | Maryland | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | WIRELESS PROV | More |
| 678 | 423 | NEWNAN | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 681 | 423 | WELLSBURG | West Virginia | BANDWIDTH.COM CLEC, LLC - WV | | More |
| 682 | 423 | ARLINGTON | Texas | ONVOY, LLC - TX | | More |
| 701 | 423 | ZEELAND | North Dakota | BEK COMMUNICATIONS COOPERATIVE | IND. TELCO | More |
| 702 | 423 | LAS VEGAS | Nevada | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV | WIRELESS PROV | More |
| 703 | 423 | WASHINGTON ZONE 8 | Maryland | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | CLEC | More |
| 704 | 423 | CHARLOTTE | North Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 705 | 423 | BORDEN ANGUS | Ontario | Bell Canada | IND. TELCO | More |
| 706 | 423 | COMMERCE | Georgia | WINDSTREAM GEORGIA, INC. | IND. TELCO | More |
| 707 | 423 | FAIRFIELD | California | PACIFIC BELL | RBOC | More |
| 708 | 423 | OAK LAWN | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 709 | 423 | GRANDOIS CROQUE | Newfoundland | Aliant Telecom (NF) | IND. TELCO | More |
| 712 | 423 | ONAWA | Iowa | QWEST CORPORATION | RBOC | More |
| 713 | 423 | HOUSTON (MCI) | Texas | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | CLEC | More |
| 714 | 423 | ANAHEIM | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 715 | 423 | WISCONSIN RAPIDS | Wisconsin | WOOD COUNTY TEL. CO. | IND. TELCO | More |
| 716 | 423 | ROCHESTER | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 717 | 423 | NEWBURG | Pennsylvania | UNITED TEL CO. OF PENNSYLVANIA DBA CENTURYLINK | IND. TELCO | More |
| 718 | 423 | NYCZ 11 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 719 | 423 | PUEBLO | Colorado | LEVEL 3 COMMUNICATIONS, LLC - CO | CLEC | More |
| 720 | 423 | DENVER | Colorado | QWEST CORPORATION | RBOC | More |
| 724 | 423 | KECKSBURG | Pennsylvania | CITIZENS TEL. CO. OF KECKSBURG | IND. TELCO | More |
| 727 | 423 | CLEARWATER | Florida | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 731 | 423 | JACKSON | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 732 | 423 | TETERBORO | New Jersey | METROPCS, INC. | | More |
| 734 | 423 | PONTIAC | Michigan | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | CLEC | More |
| 740 | 423 | BELPRE | Ohio | OHIO BELL TEL CO | RBOC | More |
| 754 | 423 | HOLLYWOOD | Florida | METROPCS, INC. | | More |
| 757 | 423 | NFKZ 2 | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 760 | 423 | PALM DESERT | California | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | | More |
| 765 | 423 | LAFAYETTE | Indiana | FRONTIER NORTH, INC.. - IN | IND. TELCO | More |
| 770 | 423 | MARIETTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 773 | 423 | CHICAGO ZONE | Illinois | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 774 | 423 | FRAMINGHAM | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 775 | 423 | FALLON | Nevada | CHURCHILL COUNTY TELEPHONE DBA CC COMMUNICATIONS | IND. TELCO | More |
| 778 | 423 | Cobble Hill | British Columbia | Shaw Telecom Inc. | | More |
| 779 | 423 | ROCKFORD | Illinois | COMCAST IP PHONE, LLC | | More |
| 780 | 423 | EDMONTON | Alberta | TELUS | IND. TELCO | More |
| 781 | 423 | FRAMINGHAM | Massachusetts | AT&T - LOCAL | CLEC | More |
| 785 | 423 | LAWRENCE | Kansas | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 786 | 423 | MIAMI | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 787 | 423 | GUAYNABO | Puerto Rico | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 801 | 423 | SALEM | Utah | QWEST CORPORATION | RBOC | More |
| 802 | 423 | READSBORO | Vermont | CONSOLIDATED COMMUNICATIONS OF VERMONT COMPANY | RBOC | More |
| 803 | 423 | BISHOPVILLE RURAL | South Carolina | FARMERS TEL. COOP., INC. | IND. TELCO | More |
| 804 | 423 | MIDLOTHIAN | Virginia | CAVALIER TELEPHONE, LLC - VA | CLEC | More |
| 805 | 423 | PASO ROBLES | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 806 | 423 | TURKEY | Texas | CAP ROCK TELEPHONE COOPERATIVE | IND. TELCO | More |
| 808 | 423 | PUULOA | Hawaii | HAWAIIAN TELCOM, INC. - HI | IND. TELCO | More |
| 810 | 423 | DETROIT | Michigan | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | | More |
| 812 | 423 | EVANSVILLE | Indiana | INDIANA BELL TEL CO INC | RBOC | More |
| 813 | 423 | TAMPAEST | Florida | YMAX COMMUNICATIONS CORP. - FL | | More |
| 814 | 423 | LOYSBURG | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 815 | 423 | ELWOOD | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 816 | 423 | KANSAS CITY | Missouri | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | CLEC | More |
| 817 | 423 | FORT WORTH WEDGEWOO | Texas | SOUTHWESTERN BELL | RBOC | More |
| 818 | 423 | LOS ANGELES: DA 01 | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 819 | 423 | MONTEBELLO | Quebec | Bell Canada | IND. TELCO | More |
| 828 | 423 | ASHEVILLE | North Carolina | SUNCOM DBA T-MOBILE USA | PCS | More |
| 830 | 423 | SAN ANTONIO | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 831 | 423 | SANTA CRUZ | California | PACIFIC BELL | RBOC | More |
| 832 | 423 | HOUSTON | Texas | METROPCS, INC. | | More |
| 843 | 423 | MARION | South Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 845 | 423 | MONTICELLO | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 847 | 423 | CHICAGO | Illinois | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 850 | 423 | CRESTVIEW | Florida | CENTURYLINK OF FLORIDA, INC. (CENTRAL) | IND. TELCO | More |
| 856 | 423 | PAULSBORO | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 857 | 423 | BROOKLINE | Massachusetts | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 859 | 423 | MOORESVL | Kentucky | AT&T CORP. | | More |
| 860 | 423 | WILLIMANTIC | Connecticut | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | IND. TELCO | More |
| 862 | 423 | NEWARK | New Jersey | OMNIPOINT COMMUNICATIONS, INC. - NJ | WIRELESS PROV | More |
| 863 | 423 | OKEECHOBEE | Florida | AMERICAN MESSAGING SERVICES, LLC | WIRELESS PROV | More |
| 864 | 423 | GREENVILLE | South Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | WIRELESS PROV | More |
| 870 | 423 | BERRYVILLE | Arkansas | WINDSTREAM ARKANSAS, INC. | IND. TELCO | More |
| 902 | 423 | HALIFAX | Nova Scotia | Aliant Telecom (NS) | IND. TELCO | More |
| 903 | 423 | GREENVILLE | Texas | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 904 | 423 | JACKSONVL | Florida | POWERTEL JACKSONVILLE LICENSES, INC. | WIRELESS PROV | More |
| 905 | 423 | AJAX PICKERING | Ontario | Rogers Communications Partnership (Cable) | CLEC | More |
| 907 | 423 | CORDOVA | Alaska | GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION | CLEC | More |
| 908 | 423 | WHITEHOUSE | New Jersey | UNITED TEL. CO. OF NEW JERSEY DBA CENTURYLINK | IND. TELCO | More |
| 909 | 423 | COLTON | California | PACIFIC BELL | RBOC | More |
| 910 | 423 | FAYETTEVILLE LAFAY | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 912 | 423 | FITZGERALD | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 913 | 423 | BASEHOR | Kansas | ONVOY, LLC - KS | | More |
| 914 | 423 | WCHZ 1 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 915 | 423 | LLANO | Texas | ALLTEL COMMUNICATIONS, INC. - TX | WIRELESS PROV | More |
| 916 | 423 | ELK GROVE | California | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | IND. TELCO | More |
| 917 | 423 | NASSAU ZONES 2 3 5 | New York | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | CLEC | More |
| 918 | 423 | MCALESTER | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 919 | 423 | DURHAM | North Carolina | SUNCOM DBA T-MOBILE USA | PCS | More |
| 920 | 423 | GREEN BAY | Wisconsin | GLOBAL CROSSING TELEMANAGEMENT, INC. - WI | CLEC | More |
| 925 | 423 | LIVERMORE | California | PACIFIC BELL | RBOC | More |
| 928 | 423 | FLAGSTAFF | Arizona | LEVEL 3 COMMUNICATIONS, LLC - AZ | | More |
| 929 | 423 | NWYRCYZN15 | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 937 | 423 | GREENVILLE | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 940 | 423 | WINDTHORST | Texas | COMMUNITY TEL. CO. | IND. TELCO | More |
| 941 | 423 | NORTH PORT | Florida | FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA | IND. TELCO | More |
| 949 | 423 | SANTA ANA IRVINE | California | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 951 | 423 | PERRIS | California | CENTURYLINK COMMUNICATIONS, LLC | | More |
| 952 | 423 | ROSEMOUNT | Minnesota | FRONTIER COMMUNICATIONS OF MINNESOTA, INC. | IND. TELCO | More |
| 954 | 423 | FORT LAUDERDALE | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 956 | 423 | HARLINGEN | Texas | SOUTHWESTERN BELL | RBOC | More |
| 970 | 423 | BRECKENRDG | Colorado | ONVOY, LLC - CO | | More |
| 971 | 423 | YAMHILL | Oregon | BANDWIDTH.COM CLEC, LLC - OR | | More |
| 972 | 423 | PLANO | Texas | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | IND. TELCO | More |
| 973 | 423 | HALEDON | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 978 | 423 | LOWELL | Massachusetts | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 980 | 423 | CHARLOTTE | North Carolina | VOIP INNOVATIONS, LLC | | More |
| 985 | 423 | PONCHATOUL | Louisiana | COMMIO, LLC | | More |
| 989 | 423 | HOUGHTONLK | Michigan | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | WIRELESS PROV | More |
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