Area
Code | Prefix | City/Switch Name
(Click for city search) | State/Prov.
Area Map | Telephone Company
Web link | Telco
Type | More
Info |
|---|
| 201 | 603 | BAYONNE | New Jersey | ALLEGIANCE TELECOM OF NEW JERSEY, INC. | CLEC | More |
| 202 | 603 | WSHNGTNZN1 | District of Columbia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC | WIRELESS PROV | More |
| 203 | 603 | NEW HAVEN | Connecticut | SOUTHERN NEW ENGLAND TELEPHONE CO. | IND. TELCO | More |
| 204 | 603 | Elie | Manitoba | LES.NET (1996) Inc. | | More |
| 205 | 603 | BIRMINGHAM | Alabama | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | WIRELESS PROV | More |
| 208 | 603 | BOISE | Idaho | SPRINT SPECTRUM L.P. - ID | PCS | More |
| 209 | 603 | MANTECA | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 210 | 603 | SANANTONIO | Texas | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 212 | 603 | NWYRCYZN01 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 213 | 603 | LSAN DA 01 | California | MPOWER NETWORKS SERVICES INC. - CA | | More |
| 214 | 603 | GRANDPRARI | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 215 | 603 | PHPHSBZN33 | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 217 | 603 | ASHMORE | Illinois | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | | More |
| 224 | 603 | ANTIOCH | Illinois | LEVEL 3 COMMUNICATIONS, LLC - IL | CLEC | More |
| 225 | 603 | BATONROUGE | Louisiana | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 229 | 603 | ALBANY | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 234 | 603 | CRESTON | Ohio | QWEST COMMUNICATIONS COMPANY, LLC | CLEC | More |
| 239 | 603 | FORT MYERS | Florida | NEUTRAL TANDEM-FLORIDA, LLC - FL | | More |
| 240 | 603 | WSHNGTNZN3 | Maryland | SPRINT SPECTRUM L.P. | PCS | More |
| 248 | 603 | SOUTHFIELD | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 250 | 603 | Sparwood | British Columbia | Bell Mobility | WIRELESS PROV | More |
| 251 | 603 | MOBILE | Alabama | NETWORK TELEPHONE CORPORATION - FL | CLEC | More |
| 252 | 603 | NEW BERN | North Carolina | ALEC, LLC - NC | CLEC | More |
| 256 | 603 | HUNTSVILLE | Alabama | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 267 | 603 | PHILADELPHIA SUBURB | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 270 | 603 | HOPKINSVL | Kentucky | RUDDATA CORPORATION | CLEC | More |
| 281 | 603 | KEMAH | Texas | NEUTRAL TANDEM-TEXAS, LLC - TX | | More |
| 301 | 603 | WSNGTNZN11 | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 302 | 603 | CAMDEN | Delaware | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE | WIRELESS PROV | More |
| 303 | 603 | DENVER | Colorado | QWEST CORPORATION | RBOC | More |
| 304 | 603 | TUNNELTON | West Virginia | GATEWAY TELECOM LLC DBA STRATUS WAVE COMM LLC WV | CLEC | More |
| 305 | 603 | MIAMI | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 306 | 603 | LLOYDMINSTER | Saskatchewan | TELUS Mobility | CAP | More |
| 309 | 603 | HAMPTON | Illinois | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | | More |
| 310 | 603 | CMTN CMTN | California | PACIFIC BELL | RBOC | More |
| 312 | 603 | CHICGOZN01 | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 313 | 603 | DETROIT ZONE 4 | Michigan | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC | | More |
| 314 | 603 | KIRKWOOD | Missouri | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 315 | 603 | POTSDAM | New York | NORTHLAND NETWORKS | CLEC | More |
| 316 | 603 | TOWANDA | Kansas | SPRINT SPECTRUM L.P. | PCS | More |
| 317 | 603 | INDIANAPLS | Indiana | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC | | More |
| 318 | 603 | MONROE | Louisiana | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 319 | 603 | CEDAR RPDS | Iowa | AIRADIGM COMMUNICATIONS INC | PCS | More |
| 323 | 603 | LSAN DA 14 | California | MCI WORLDCOM COMMUNICATIONS, INC., CA | CLEC | More |
| 325 | 603 | ABILENE | Texas | LEVEL 3 COMMUNICATIONS, LLC - TX | CLEC | More |
| 330 | 603 | AKRON | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 334 | 603 | MOBILE | Alabama | SPRINT SPECTRUM L.P. | PCS | More |
| 336 | 603 | GIBSONVL | North Carolina | WINDSTREAM COMMUNICATIONS, INC. - NC | CLEC | More |
| 337 | 603 | EUNICE | Louisiana | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 347 | 603 | NWYRCYZN05 | New York | METROPOLITAN TELECOMMUNICATIONS | CLEC | More |
| 352 | 603 | BUSHNELL | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 360 | 603 | WHATCOMCTY | Washington | BROADWING COMMUNICATIONS, LLC - WA | CLEC | More |
| 361 | 603 | ALICE | Texas | FITCH, F. CARY | WIRELESS | More |
| 386 | 603 | WELAKA | Florida | US LEC OF FLORIDA, INC. | CLEC | More |
| 401 | 603 | PROVIDENCE | Rhode Island | YMAX COMMUNICATIONS CORP. - RI | | More |
| 402 | 603 | OSCEOLA | Nebraska | LEVEL 3 COMMUNICATIONS, LLC - NE | | More |
| 403 | 603 | VEGREVILLE | Alberta | TELUS | IND. TELCO | More |
| 404 | 603 | ATLANTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 405 | 603 | BETHANY | Oklahoma | COX CABLE OKLAHOMA CITY INC. | CLEC | More |
| 406 | 603 | HELENA | Montana | BLACKFOOT COMMUNICATIONS, INC. - MT | CLEC | More |
| 407 | 603 | OVIEDO | Florida | TCG SOUTH FLORIDA | CLEC | More |
| 408 | 603 | CAMPBELL | California | TW TELECOM OF CALIFORNIA LP - CA | CLEC | More |
| 410 | 603 | SALISBURY | Maryland | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 412 | 603 | BUTLER | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 414 | 603 | MILWAUKZN1 | Wisconsin | AMERICAN MESSAGING (AM), INC. | | More |
| 415 | 603 | SNFC CNTRL | California | XO CALIFORNIA, INC. | CLEC | More |
| 416 | 603 | TORONTO | Ontario | Bell Canada | IND. TELCO | More |
| 418 | 603 | Levis | Quebec | Videotron General Partnership | CLEC | More |
| 419 | 603 | CLYDE | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 423 | 603 | FORK RIDGE | Tennessee | SBC INTERNET SERVICES, INC. | | More |
| 424 | 603 | CULVERCITY | California | SBC INTERNET SERVICES, INC. | | More |
| 425 | 603 | BELLEVUE | Washington | QWEST CORPORATION | RBOC | More |
| 432 | 603 | VAN HORN | Texas | SPRINT SPECTRUM L.P. | PCS | More |
| 434 | 603 | FARMVILLE | Virginia | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 435 | 603 | HYRUM | Utah | TELEPORT COMMUNICATIONS GROUP, INC. - UT | CLEC | More |
| 440 | 603 | HILLCREST | Ohio | AMERITECH OHIO | RBOC | More |
| 443 | 603 | ANNAPOLIS | Maryland | PAETEC COMMUNICATIONS, INC. - MD | CLEC | More |
| 450 | 603 | Howick | Quebec | Videotron General Partnership | CLEC | More |
| 469 | 603 | DALLAS | Texas | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 480 | 603 | PHOENIX | Arizona | XO ARIZONA, INC. | CLEC | More |
| 484 | 603 | PHPHSBZN21 | Pennsylvania | BROADWING COMMUNICATIONS, LLC - PA | CLEC | More |
| 501 | 603 | LITTLEROCK | Arkansas | SOUTHWESTERN BELL | RBOC | More |
| 502 | 603 | GEORGETOWN | Kentucky | LEVEL 3 COMMUNICATIONS, LLC - KY | CLEC | More |
| 503 | 603 | BEAVERTON | Oregon | FRONTIER COMMUNICATIONS NORTHWEST, INC. - OR | IND. TELCO | More |
| 504 | 603 | NEWORLEANS | Louisiana | BANDWIDTH.COM CLEC, LLC - LA | | More |
| 505 | 603 | SANTA FE | New Mexico | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 506 | 603 | Paquetville | New Brunswick | Rogers Communications Partnership (Cable) | | More |
| 507 | 603 | KASSON | Minnesota | CHARTER FIBERLINK CCO, LLC - MN | | More |
| 508 | 603 | UPTON | Massachusetts | LEVEL 3 COMMUNICATIONS, LLC - MA | CLEC | More |
| 510 | 603 | ELSBR-PINL | California | TIME WARNER TELECOM OF CALIFORNIA, L.P. | CLEC | More |
| 512 | 603 | AUSTIN | Texas | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 513 | 603 | HAMILTON | Ohio | CINCINNATI BELL, INC. | IND. TELCO | More |
| 514 | 603 | ONTREAL | Quebec | Bell Mobility | WIRELESS PROV | More |
| 515 | 603 | EAGLEGROVE | Iowa | GOLDFIELD ACCESS NETWORK, L.C. | CLEC | More |
| 516 | 603 | NASSAUZN01 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 517 | 603 | ALPENA | Michigan | AMERITECH MOBILE COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 518 | 603 | ALBANY | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 519 | 603 | Kitchener-Waterloo | Ontario | Execulink Telecom Inc. | IND. TELCO | More |
| 520 | 603 | TUCSON | Arizona | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | WIRELESS PROV | More |
| 530 | 603 | BANGOR | California | MPOWER NETWORKS SERVICES INC. - CA | | More |
| 540 | 603 | LOUISA | Virginia | CAVALIER TELEPHONE, LLC | CLEC | More |
| 541 | 603 | EUGENE | Oregon | YMAX COMMUNICATIONS CORP. - OR | | More |
| 559 | 603 | CLOVIS | California | AMERICAN MESSAGING SERVICES, LLC | WIRELESS PROV | More |
| 561 | 603 | WPALMBEACH | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 567 | 603 | MINSTER | Ohio | BROOKS FIBER COMMUNICATIONS OF OHIO, INC. - OH | CLEC | More |
| 570 | 603 | PITTSTON | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 573 | 603 | HANNIBAL | Missouri | CHARTER FIBERLINK, LLC - MO | | More |
| 574 | 603 | BURNETTSVL | Indiana | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 580 | 603 | ENID | Oklahoma | UNITED STATES CELLULAR CORP. - OKLAHOMA | WIRELESS PROV | More |
| 601 | 603 | MIZE | Mississippi | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | WIRELESS PROV | More |
| 603 | 603 | XXXXXXXXXX | New Hampshire | VERIZON NEW ENGLAND INC. | RBOC | More |
| 604 | 603 | VANCOUVER | British Columbia | Rogers Communications Partnership (Wireless) | WIRELESS PROV | More |
| 606 | 603 | SOWILLIMSN | Kentucky | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 607 | 603 | ITHACA | New York | NORTHLAND NETWORKS | CLEC | More |
| 608 | 603 | JANESVILLE | Wisconsin | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 609 | 603 | PLEASANTVL | New Jersey | CORETEL NEW JERSEY, INC. - NJ | | More |
| 610 | 603 | READING | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 613 | 603 | Bourget | Ontario | Videotron General Partnership | CLEC | More |
| 614 | 603 | COLUMBUS | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 615 | 603 | MURFREESBO | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 616 | 603 | GREENVILLE | Michigan | ALGER COMMUNICATIONS, INC | WIRELESS PROV | More |
| 617 | 603 | BOSTON | Massachusetts | MCI WORLDCOM COMMUNICATIONS, INC. - MA | CLEC | More |
| 618 | 603 | MANCHESTER | Missouri | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | WIRELESS PROV | More |
| 620 | 603 | GREAT BEND | Kansas | LEVEL 3 COMMUNICATIONS, LLC - KS | | More |
| 626 | 603 | SNGBLCNN | California | PAC - WEST TELECOMM, INC. | CLEC | More |
| 630 | 603 | ROSELLE | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 631 | 603 | NEW YORK | New York | BROADVIEW NETWORKS, INC. - NY | CLEC | More |
| 646 | 603 | NWYRCYZN01 | New York | US LEC COMMUNICATIONS, INC. - NY | | More |
| 650 | 603 | MOUNTAIN VIEW | California | PACIFIC BELL | RBOC | More |
| 651 | 603 | STPZ 2 | Minnesota | QWEST CORPORATION | RBOC | More |
| 662 | 603 | CORINTH | Mississippi | AT&T LOCAL | CLEC | More |
| 678 | 603 | GRIFFIN | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 703 | 603 | WASZ 8 | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 704 | 603 | CHARLOTTE | North Carolina | US LEC OF NORTH CAROLINA, INC. | CLEC | More |
| 706 | 603 | ELBERTON | Georgia | LEVEL 3 COMMUNICATIONS, LLC - GA | CLEC | More |
| 707 | 603 | SAN RAFAEL | California | U.S. TELEPACIFIC CORP. - CA | CLEC | More |
| 708 | 603 | LA GRANGE | Illinois | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | WIRELESS PROV | More |
| 713 | 603 | HOUSTON | Texas | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 714 | 603 | ANAHEIM | California | METROPCS NETWORKS, LLC | | More |
| 715 | 603 | PRESCOTT | Wisconsin | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 716 | 603 | BUFFALO | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 717 | 603 | HARISBGZN1 | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 718 | 603 | NEW YORK CITY ZONE | New York | BROADWING COMMUNICATIONS, LLC - NY | CLEC | More |
| 724 | 603 | PITTSBURGH | Pennsylvania | TCG PITTSBURGH, INC. | CAP | More |
| 732 | 603 | METUCHEN | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 740 | 603 | LOGAN | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 757 | 603 | NEWPORT NEWS ZONE 2 | Virginia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | WIRELESS PROV | More |
| 760 | 603 | CARLSBAD | California | PACIFIC BELL | RBOC | More |
| 765 | 603 | MARION | Indiana | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 770 | 603 | JONESBORO | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 773 | 603 | CHICGOZN10 | Illinois | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 778 | 603 | Powell River | British Columbia | Bell West Inc. | | More |
| 780 | 603 | VEGREVILLE | Alberta | TELUS | IND. TELCO | More |
| 781 | 603 | NORWOOD | Massachusetts | SPRINT SPECTRUM L.P. | PCS | More |
| 786 | 603 | MIAMI | Florida | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 787 | 603 | SANTURCE | Puerto Rico | PR WIRELESS, INC. DBA OPEN MOBILE | PCS | More |
| 801 | 603 | OGDEN | Utah | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 803 | 603 | COLUMBIA | South Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | WIRELESS PROV | More |
| 804 | 603 | FARMVILLE | Virginia | SUNCOM DBA T-MOBILE USA | PCS | More |
| 805 | 603 | LOS ANGELES - PAC W | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 806 | 603 | RALLS | Texas | QWEST COMMUNICATIONS COMPANY, LLC | CLEC | More |
| 810 | 603 | GRAND BLANC | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 812 | 603 | COLUMBUS | Indiana | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 813 | 603 | TAMPAEST | Florida | MCI WORLDCOM COMMUNICATIONS, INC. - FL | CLEC | More |
| 814 | 603 | DUBOIS | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 815 | 603 | JOLIET | Illinois | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 816 | 603 | KANSAS CITY | Missouri | DIGITAL TELEPORT, INC. - MO | CAP | More |
| 817 | 603 | FORT WORTH | Texas | TW TELECOM OF TEXAS LLC - TX | CLEC | More |
| 818 | 603 | VAN NUYS | California | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 819 | 603 | Ste-Angele | Quebec | TELUS Quebec | | More |
| 831 | 603 | OAKLAND | California | PAC - WEST TELECOMM, INC. | CLEC | More |
| 832 | 603 | HOUSTON | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 843 | 603 | EDISTO IS | South Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | WIRELESS PROV | More |
| 845 | 603 | NEW YORK | New York | XO NEW YORK, INC. | CLEC | More |
| 847 | 603 | CHICAGO | Illinois | COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL | CLEC | More |
| 850 | 603 | CRESTVIEW | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 856 | 603 | CAMDEN | New Jersey | PAETEC COMMUNICATIONS, INC. - NJ | CLEC | More |
| 858 | 603 | RANCHO PENASQUITOS | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 860 | 603 | COLCHESTER | Connecticut | COMCAST PHONE OF CONNECTICUT, INC. - CT | CLEC | More |
| 863 | 603 | LAKELAND | Florida | VERIZON FLORIDA INC. | IND. TELCO | More |
| 864 | 603 | GREENVILLE | South Carolina | CHARTER FIBERLINK SC-CCO, LLC - SC | | More |
| 865 | 603 | KNOXVILLE | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 870 | 603 | FISHER | Arkansas | E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR | | More |
| 901 | 603 | MEMPHIS | Tennessee | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 903 | 603 | STREETMAN | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 904 | 603 | JACKSONVILLE | Florida | PRIORITY PAGING, INC. | WIRELESS PROV | More |
| 905 | 603 | STREETSVILLE | Ontario | Rogers Communications Partnership (Cable) | CLEC | More |
| 908 | 603 | ELIZABETH | New Jersey | PAETEC COMMUNICATIONS, INC. - NJ | CLEC | More |
| 909 | 603 | CLAREMONT | California | VERIZON CALIFORNIA INC.-CA (GTE) | IND. TELCO | More |
| 910 | 603 | SOUTHERN PINES | North Carolina | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 913 | 603 | GARDNER | Kansas | WILDFLOWER TELECOMMUNICATIONS, LLC - KS | | More |
| 914 | 603 | NEW YORK | New York | AT&T LOCAL | CLEC | More |
| 915 | 603 | EL PASO | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 916 | 603 | SACRAMENTO: MAIN DA | California | SAN DIEGO PAGING | WIRELESS PROV | More |
| 917 | 603 | NEW YORK CITY ZONE | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 918 | 603 | PORUM | Oklahoma | CROSS WIRELESS, L.L.C. | | More |
| 919 | 603 | OXFORD | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 920 | 603 | STURGEONBY | Wisconsin | SPRINT SPECTRUM L.P. | PCS | More |
| 925 | 603 | CONCORD | California | PACIFIC BELL | RBOC | More |
| 931 | 603 | LAWRENCEBURG | Tennessee | LEVEL 3 COMMUNICATIONS, LLC - TN | CLEC | More |
| 937 | 603 | DAYTON | Ohio | SPRINT SPECTRUM L.P. | PCS | More |
| 940 | 603 | HENRIETTA | Texas | CHOICE WIRELESS LC | | More |
| 949 | 603 | EL TORO | California | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 951 | 603 | TEMSCL CNY | California | O1 COMMUNICATIONS, INC. - CA | CLEC | More |
| 954 | 603 | POMPANO BEACH | Florida | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 956 | 603 | EDINBURG | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 970 | 603 | MONTROSE | Colorado | GRAND VALLEY INTERNET, INC. - CO | | More |
| 972 | 603 | DALLAS MIDCITIES | Texas | SOUTHWESTERN BELL | RBOC | More |
| 973 | 603 | NEWARK | New Jersey | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 985 | 603 | NORCO | Louisiana | DELTACOM, INC. - LA | CLEC | More |
| 989 | 603 | ALPENA | Michigan | AMERICAN MESSAGING (AM), INC. | | More |
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