Area Code | Prefix | City/Switch Name (Click for city search) | State/Prov. Area Map | Telephone Company Web link | Telco Type | More Info |
|---|
| 201 | 257 | HASBROKHTS | New Jersey | OMNIPOINT COMMUNICATIONS, INC. - NJ | WIRELESS PROV | More |
| 202 | 257 | WSHNGTNZN1 | District of Columbia | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 203 | 257 | BRIDGEPORT | Connecticut | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WIRELESS PROV | More |
| 204 | 257 | WINNIPEG | Manitoba | MTS Inc. | IND. TELCO | More |
| 205 | 257 | BIRMINGHAM | Alabama | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 206 | 257 | SEATTLE | Washington | COMCAST IP PHONE, LLC | | More |
| 207 | 257 | PLYMOUTH | Maine | MID-MAINE TELECOM LLC | IND. TELCO | More |
| 208 | 257 | CAMBRIDGE | Idaho | CAMBRIDGE TELEPHONE COMPANY | IND. TELCO | More |
| 209 | 257 | JACKSON | California | PACIFIC BELL | RBOC | More |
| 210 | 257 | SANANTONIO | Texas | SOUTHWESTERN BELL | RBOC | More |
| 212 | 257 | NWYRCYZN01 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 213 | 257 | LSAN DA 07 | California | PACIFIC BELL | RBOC | More |
| 214 | 257 | DALLAS | Texas | AT&T - LOCAL | CLEC | More |
| 215 | 257 | PERKASIE | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 216 | 257 | CLEVELAND | Ohio | OHIO BELL TEL CO | RBOC | More |
| 217 | 257 | QUINCY | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 218 | 257 | BENNETTVL | Minnesota | LEVEL 3 COMMUNICATIONS, LLC - MN | | More |
| 219 | 257 | CROWNPOINT | Indiana | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 220 | 257 | MARION | Ohio | ONVOY, LLC - OH | | More |
| 223 | 257 | LEWISTOWN | Pennsylvania | D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE | PCS | More |
| 224 | 257 | DESPLAINES | Illinois | ONVOY, LLC | | More |
| 225 | 257 | DONALDSNVL | Louisiana | COMCAST IP PHONE, LLC | | More |
| 226 | 257 | Walkerton | Ontario | Fibernetics Corporation | | More |
| 228 | 257 | BILOXI | Mississippi | METROPCS, INC. | | More |
| 229 | 257 | VALDOSTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 231 | 257 | LAKE CITY | Michigan | PENINSULA FIBER NETWORK, LLC - MI | | More |
| 234 | 257 | MONTROSE | Ohio | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 239 | 257 | CAPE CORAL | Florida | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | CLEC | More |
| 240 | 257 | NANJEMOY | District of Columbia | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | CLEC | More |
| 248 | 257 | DRAYTON PL | Michigan | GLOBAL CROSSING TELEMANAGEMENT, INC. - MI | CLEC | More |
| 250 | 257 | Tumbler Ridge | British Columbia | TELUS Mobility | WIRELESS PROV | More |
| 251 | 257 | FLOMATON | Alabama | ONVOY, LLC - AL | | More |
| 252 | 257 | WARRENTON | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 253 | 257 | TACOMAWVLY | Washington | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 254 | 257 | MAY | Texas | AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | | More |
| 256 | 257 | FALKVILLE | Alabama | ONVOY, LLC - AL | | More |
| 260 | 257 | CRAIGVILLE | Indiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | WIRELESS PROV | More |
| 262 | 257 | MENOMONFLS | Wisconsin | WISCONSIN BELL INC | RBOC | More |
| 267 | 257 | PHLDLPHZN1 | Pennsylvania | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | WIRELESS PROV | More |
| 269 | 257 | STURGIS | Michigan | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | WIRELESS PROV | More |
| 270 | 257 | MCDANIELS | Kentucky | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 272 | 257 | HONESDALE | Pennsylvania | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | WIRELESS PROV | More |
| 276 | 257 | BIGSTONEGP | Virginia | COMCAST IP PHONE, LLC | | More |
| 279 | 257 | SCRM MAIN | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 281 | 257 | TOMBALL | Texas | SOUTHWESTERN BELL | RBOC | More |
| 289 | 257 | Niagara Falls | Ontario | Bell Mobility | WIRELESS PROV | More |
| 301 | 257 | WSHNGTNZN3 | Maryland | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | WIRELESS PROV | More |
| 302 | 257 | DOVER | Delaware | PEERLESS NETWORK OF DELAWARE, LLC - DE | | More |
| 303 | 257 | DENVER | Colorado | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 304 | 257 | PETERSBURG | West Virginia | CITIZENS TEL CO OF WV DBA FRONTIER OF WV | IND. TELCO | More |
| 305 | 257 | HOMESTEAD | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 306 | 257 | ALLAN | Saskatchewan | SaskTel | IND. TELCO | More |
| 307 | 257 | GILLETTE | Wyoming | LEVEL 3 COMMUNICATIONS, LLC - WY | | More |
| 308 | 257 | MINDEN | Nebraska | COMCAST IP PHONE, LLC | | More |
| 309 | 257 | LITTLETON | Illinois | MCDONOUGH TEL. COOP. | IND. TELCO | More |
| 310 | 257 | LOMITA | California | PACIFIC BELL | RBOC | More |
| 312 | 257 | CHICGOZN01 | Illinois | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | WIRELESS PROV | More |
| 313 | 257 | DETROITZN5 | Michigan | METROPCS, INC. | | More |
| 314 | 257 | ST LOUIS | Missouri | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | CAP | More |
| 315 | 257 | SENECA FLS | New York | PAETEC COMMUNICATIONS, INC. - NY | CLEC | More |
| 316 | 257 | TOWANDA | Kansas | SPRINT SPECTRUM L.P. | PCS | More |
| 317 | 257 | INDIANAPLS | Indiana | INDIANA BELL TEL CO INC | RBOC | More |
| 318 | 257 | RUSTON | Louisiana | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 319 | 257 | WINFIELD | Iowa | WINDSTREAM IOWA COMMUNICATIONS, INC. | | More |
| 320 | 257 | ST CLOUD | Minnesota | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | CLEC | More |
| 321 | 257 | SANFORD | Florida | WINDSTREAM NUVOX, INC. | CLEC | More |
| 323 | 257 | LSAN DA 03 | California | PACIFIC BELL | RBOC | More |
| 325 | 257 | JUNCTION | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 330 | 257 | ALLIANCE | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 331 | 257 | AURORA | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 332 | 257 | NWYRCYZN01 | New York | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | WIRELESS PROV | More |
| 334 | 257 | NOTASULGA | Alabama | CENTURYTEL TEL AL LLC (NORTHERN) DBA CENTURYLINK | | More |
| 336 | 257 | ASHEBORO | North Carolina | SUNCOM DBA T-MOBILE USA | PCS | More |
| 337 | 257 | LAFAYETTE | Louisiana | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 346 | 257 | KATY | Texas | LEVEL 3 COMMUNICATIONS, LLC - TX | CLEC | More |
| 347 | 257 | NWYRCYZN10 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 352 | 257 | CRYSTALRIV | Florida | METROPCS, INC. | | More |
| 360 | 257 | OAK HARBOR | Washington | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | IND. TELCO | More |
| 361 | 257 | BENAVIDES | Texas | VONAGE AMERICA LLC | | More |
| 380 | 257 | DUBLIN | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 385 | 257 | MURRAY | Utah | VERACITY COMMUNICATIONS, INC. - UT | | More |
| 386 | 257 | DAYTONABCH | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 401 | 257 | CUMBLND HL | Rhode Island | CTC COMMUNICATIONS CORP. - RI | | More |
| 402 | 257 | GUIDE ROCK | Nebraska | WINDSTREAM NEBRASKA, INC. | IND. TELCO | More |
| 403 | 257 | CALGARY | Alberta | TELUS | IND. TELCO | More |
| 404 | 257 | ATLANTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 405 | 257 | WEWOKA | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 406 | 257 | KALISPELL | Montana | CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | IND. TELCO | More |
| 407 | 257 | ORLANDO | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 408 | 257 | SNJS WEST | California | PACIFIC BELL | RBOC | More |
| 409 | 257 | DAYTON | Texas | CSC WIRELESS, LLC | | More |
| 410 | 257 | NORTHBEACH | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 412 | 257 | PTGSBNZN13 | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 413 | 257 | SPRINGFLD | Massachusetts | AMERICAN MESSAGING SERVICES, LLC | | More |
| 414 | 257 | MILWAUKZN1 | Wisconsin | WISCONSIN BELL INC | RBOC | More |
| 415 | 257 | SAN RAFAEL | California | PACIFIC BELL | RBOC | More |
| 417 | 257 | WESTPLAINS | Missouri | CENTURYTEL MISSOURI LLC (SOUTHERN)DBA CENTURYLINK | | More |
| 418 | 257 | ST MAGLOIRE | Quebec | Sogetel Inc. | CAP | More |
| 419 | 257 | NO BALTIMR | Ohio | FRONTIER NORTH, INC. - OH | IND. TELCO | More |
| 423 | 257 | LIMESTONE | Tennessee | UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN | IND. TELCO | More |
| 424 | 257 | REDONDO | California | BANDWIDTH.COM CLEC, LLC - CA | | More |
| 425 | 257 | EVERETT | Washington | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | IND. TELCO | More |
| 430 | 257 | RICE | Texas | BANDWIDTH.COM CLEC, LLC - TX | | More |
| 432 | 257 | ODESSA | Texas | SOUTHWESTERN BELL | RBOC | More |
| 434 | 257 | CHARLOTSVL | Virginia | NUSO, LLC | | More |
| 435 | 257 | TREMONTON | Utah | CITIZENS TELECOM-UTAH DBA FRONTIER COMM OF UT | IND. TELCO | More |
| 438 | 257 | Ile-Perrot | Quebec | Videotron General Partnership | CLEC | More |
| 440 | 257 | MENTOR | Ohio | OHIO BELL TEL CO | RBOC | More |
| 442 | 257 | ESCONDIDO | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 443 | 257 | BALTIMORE | Maryland | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | WIRELESS PROV | More |
| 445 | 257 | PHPHSBZN39 | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 447 | 257 | MASON CITY | Illinois | ONVOY, LLC | | More |
| 458 | 257 | GRANTSPASS | Oregon | UNITED STATES CELLULAR - OR | WIRELESS PROV | More |
| 463 | 257 | SHERIDAN | Indiana | ONVOY, LLC - IN | | More |
| 469 | 257 | ITALY | Texas | AT&T CORP. | | More |
| 470 | 257 | ATLANTA | Georgia | POWERTEL ATLANTA LICENSES, INC. | WIRELESS PROV | More |
| 475 | 257 | NORWALK | Connecticut | CSC WIRELESS, LLC | | More |
| 478 | 257 | MACON | Georgia | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | CLEC | More |
| 479 | 257 | ROGERS | Arkansas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | WIRELESS PROV | More |
| 480 | 257 | PHOENIX | Arizona | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 484 | 257 | PHPHSBZN17 | Pennsylvania | US LEC OF PENNSYLVANIA, INC. | CLEC | More |
| 501 | 257 | LITTLEROCK | Arkansas | SOUTHWESTERN BELL | RBOC | More |
| 502 | 257 | SHELBYVL | Kentucky | LEVEL 3 COMMUNICATIONS, LLC - KY | CLEC | More |
| 503 | 257 | PORTLAND | Oregon | QWEST CORPORATION | RBOC | More |
| 504 | 257 | NEWORLEANS | Louisiana | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 505 | 257 | RUIDOSO | New Mexico | BANDWIDTH.COM CLEC, LLC - NM | | More |
| 507 | 257 | EAGLE LAKE | Minnesota | CONSOLIDATED COMMUNICATIONS MID-COM COMPANY - MN | IND. TELCO | More |
| 508 | 257 | SIASCONSET | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 509 | 257 | SPRAGUE | Washington | CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK | IND. TELCO | More |
| 510 | 257 | FRNK OLIVR | California | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | CLEC | More |
| 512 | 257 | AUSTIN | Texas | SOUTHWESTERN BELL | RBOC | More |
| 513 | 257 | CINCINNATI | Ohio | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 514 | 257 | MONTREAL | Quebec | Bell Canada | IND. TELCO | More |
| 515 | 257 | ANKENY | Iowa | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | CLEC | More |
| 516 | 257 | NASSAUZN08 | New York | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 517 | 257 | SIXTY LAKES | Michigan | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | WIRELESS PROV | More |
| 518 | 257 | ALBANY | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 519 | 257 | WINDSOR | Ontario | Bell Canada | IND. TELCO | More |
| 520 | 257 | YUMA | Arizona | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 530 | 257 | SUSANVILLE | California | CITIZENS TELECOM CA. DBA FRONTIER COM OF CA | IND. TELCO | More |
| 531 | 257 | VALENTINE | Nebraska | ALLO COMMUNICATIONS, LLC - NE | | More |
| 539 | 257 | CLEVELAND | Oklahoma | BANDWIDTH.COM CLEC, LLC - OK | | More |
| 540 | 257 | CHRISTISBG | Virginia | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | WIRELESS PROV | More |
| 541 | 257 | CORVALLIS | Oregon | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | CLEC | More |
| 551 | 257 | UNION CITY | New Jersey | OMNIPOINT COMMUNICATIONS, INC. - NJ | WIRELESS PROV | More |
| 559 | 257 | SELMA | California | LEVEL 3 COMMUNICATIONS, LLC - CA | CLEC | More |
| 561 | 257 | WEST PALM BEACH | Florida | METROPCS, INC. | | More |
| 562 | 257 | LONG BEACH | California | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | CLEC | More |
| 564 | 257 | BREMERTON | Washington | TELEPORT COMMUNICATIONS AMERICA, LLC - WA | CAP | More |
| 567 | 257 | UPSANDUSKY | Ohio | BANDWIDTH.COM CLEC, LLC - OH | | More |
| 570 | 257 | LORDS VLY | Pennsylvania | LEVEL 3 COMMUNICATIONS, LLC - PA | CLEC | More |
| 571 | 257 | WSNGTNZN08 | Virginia | COX VIRGINIA TELCOM, INC. - VA | CLEC | More |
| 573 | 257 | JEFFERSNCY | Missouri | ONVOY SPECTRUM, LLC | | More |
| 574 | 257 | SOUTH BEND | Indiana | INDIANA BELL TEL CO INC | RBOC | More |
| 575 | 257 | RUIDOSO | New Mexico | VALOR TELECOM TX,LP-NM #2 DBA WINDSTREAM COMM SW | | More |
| 580 | 257 | TISHOMINGO | Oklahoma | UNITED STATES CELLULAR - OK | WIRELESS PROV | More |
| 581 | 257 | St-Hilarion | Quebec | Telecommunications Xittel Inc | | More |
| 582 | 257 | BOALSBURG | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 585 | 257 | HOLCOMB | New York | PAETEC COMMUNICATIONS, INC. - NY | CLEC | More |
| 586 | 257 | MT CLEMENS | Michigan | ONVOY, LLCV - MI | | More |
| 587 | 257 | Lethbridge | Alberta | TELUS Mobility | WIRELESS PROV | More |
| 601 | 257 | FOREST | Mississippi | DIXIE NET COMMUNICATIONS, LLC | CLEC | More |
| 602 | 257 | PHOENIX | Arizona | QWEST CORPORATION | RBOC | More |
| 603 | 257 | PLAISTOW | New Hampshire | FREEDOM RING COMMUNICATIONS, LLC | CLEC | More |
| 604 | 257 | VANCOUVER | British Columbia | TELUS | IND. TELCO | More |
| 605 | 257 | NISLAND | South Dakota | WEST RIVER COOPERATIVE TELEPHONE COMPANY | IND. TELCO | More |
| 606 | 257 | SOWILLIMSN | Kentucky | LEVEL 3 COMMUNICATIONS, LLC - KY | CLEC | More |
| 607 | 257 | ITHACA | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 608 | 257 | MADISON | Wisconsin | WISCONSIN BELL INC | RBOC | More |
| 609 | 257 | MEDFORD | New Jersey | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | CLEC | More |
| 610 | 257 | PHPHSBZN23 | Pennsylvania | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | CLEC | More |
| 612 | 257 | TWINCITIES | Minnesota | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | | More |
| 613 | 257 | CARLETON PLACE | Ontario | Bell Canada | IND. TELCO | More |
| 614 | 257 | COLUMBUS | Ohio | OHIO BELL TEL CO | RBOC | More |
| 615 | 257 | LEBANON | Tennessee | LEVEL 3 COMMUNICATIONS, LLC - TN | CLEC | More |
| 616 | 257 | GRAND RPDS | Michigan | MICHIGAN BELL TEL CO | RBOC | More |
| 617 | 257 | SAUGUS | Massachusetts | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 618 | 257 | BELLEVILLE | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 619 | 257 | SNDG SNDG | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 620 | 257 | LYONS | Kansas | SOUTHWESTERN BELL | RBOC | More |
| 623 | 257 | PHOENIX | Arizona | BANDWIDTH.COM CLEC, LLC - AZ | | More |
| 626 | 257 | COVINA | California | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 628 | 257 | MILLVALLEY | California | RACE TELECOMMUNICATIONS, INC. - CA | | More |
| 629 | 257 | NASHVILLE | Tennessee | DISH WIRELESS, LLC | | More |
| 630 | 257 | LEMONT | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 631 | 257 | SMITHTOWN | New York | CABLEVISION LIGHTPATH, INC. - NY | CLEC | More |
| 636 | 257 | PACIFIC | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 640 | 257 | TUCKERTON | New Jersey | ONVOY, LLC - NJ | | More |
| 641 | 257 | CHARLES CITY | Iowa | QWEST CORPORATION | RBOC | More |
| 646 | 257 | NWYRCYZN01 | New York | LEVEL 3 COMMUNICATIONS, LLC - NY | CLEC | More |
| 650 | 257 | SAN FRANCISCO | California | GLOBAL CROSSING LOCAL SERVICES, INC. - CA | CLEC | More |
| 651 | 257 | LINDSTROM | Minnesota | CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN | | More |
| 657 | 257 | WESTMINSTR | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 659 | 257 | HAMILTON | Alabama | ONVOY, LLC - AL | | More |
| 660 | 257 | CHILLICOTH | Missouri | SPRINT SPECTRUM L.P. | PCS | More |
| 661 | 257 | CASTAIC | California | PACIFIC BELL | RBOC | More |
| 662 | 257 | AMORY | Mississippi | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 667 | 257 | COLUMBIA | Maryland | VONAGE AMERICA LLC | | More |
| 669 | 257 | SAN MARTIN | California | BANDWIDTH.COM CLEC, LLC - CA | | More |
| 678 | 257 | BOWDON | Georgia | DELTACOM, INC. - GA | CLEC | More |
| 680 | 257 | HANNIBAL | New York | PEERING HUB, INC. - NY | | More |
| 681 | 257 | MANNINGTON | West Virginia | ONVOY, LLC - WV | | More |
| 682 | 257 | NRICHLDHLS | Texas | METROPCS, INC. | | More |
| 689 | 257 | ORLANDO | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 701 | 257 | SAINT THOMAS | North Dakota | POLAR COMMUN MUTUAL AID CORP. | IND. TELCO | More |
| 702 | 257 | LAS VEGAS | Nevada | CENTRAL TEL. CO. - NEVADA DBA CENTURYLINK | IND. TELCO | More |
| 703 | 257 | MANASSAS | Virginia | VERIZON SOUTH, INC. - VA (CONTEL) | IND. TELCO | More |
| 704 | 257 | CHARLOTTE | North Carolina | GLOBAL CROSSING LOCAL SERVICES, INC. - NC | | More |
| 705 | 257 | SAULT ST MARIE | Ontario | Bell Canada | IND. TELCO | More |
| 706 | 257 | COLUMBUS | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 707 | 257 | NAPA | California | PACIFIC BELL | RBOC | More |
| 708 | 257 | LOMBARD | Illinois | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 709 | 257 | BOTWOOD | Newfoundland | Aliant Telecom (NF) | IND. TELCO | More |
| 712 | 257 | SERGEANT BLUFF | Iowa | NORTHWEST IOWA TELEPHONE, LLC | IND. TELCO | More |
| 713 | 257 | HOUSTON JACKSON | Texas | SOUTHWESTERN BELL | RBOC | More |
| 714 | 257 | BREA | California | PACIFIC BELL | RBOC | More |
| 715 | 257 | ATHENS | Wisconsin | FRONTIER NORTH INC. - WI | IND. TELCO | More |
| 716 | 257 | CATTARAUGUS | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 717 | 257 | HARRISBURG | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 718 | 257 | NYCZ 6 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 719 | 257 | COLORDOSPG | Colorado | ONVOY SPECTRUM, LLC | | More |
| 720 | 257 | DENVER | Colorado | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 724 | 257 | TARENTUM | Pennsylvania | CORE COMMUNICATIONS, INC. - PA | | More |
| 725 | 257 | LAS VEGAS | Nevada | ONVOY, LLC - NV | | More |
| 727 | 257 | ST PETERSBURG | Florida | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 731 | 257 | PARSONS | Tennessee | CHARTER FIBERLINK-TENNESSEE, LLC - TN | | More |
| 732 | 257 | SOUTH RIVER | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 734 | 257 | DETROIT | Michigan | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | | More |
| 737 | 257 | SANGABRIEL | Texas | BANDWIDTH.COM CLEC, LLC - TX | | More |
| 740 | 257 | MARION | Ohio | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 743 | 257 | WINSTN SAL | North Carolina | NUSO, LLC | | More |
| 747 | 257 | GLENDALE | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 754 | 257 | HOLLYWOOD | Florida | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 757 | 257 | NEWPORT NEWS ZONE 3 | Virginia | BANDWIDTH.COM CLEC, LLC - VA | | More |
| 760 | 257 | NEWBERRY | California | FRONTIER CALIFORNIA INC. | IND. TELCO | More |
| 762 | 257 | AUGUSTA | Georgia | NUSO, LLC | | More |
| 763 | 257 | MNPZ 9 | Minnesota | QWEST CORPORATION | RBOC | More |
| 765 | 257 | PARAGON | Indiana | ONVOY, LLC - IN | | More |
| 769 | 257 | JACKSON | Mississippi | BANDWIDTH.COM CLEC, LLC - MS | | More |
| 770 | 257 | ATLANTA NORTHWEST | Georgia | DELTACOM, INC. - GA | CLEC | More |
| 772 | 257 | WEST PALM BEACH | Florida | WINDSTREAM NUVOX, INC. - FL | CLEC | More |
| 773 | 257 | CHCZ 6 | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 774 | 257 | BELLINGHAM | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 775 | 257 | GABBS | Nevada | ONVOY, LLC - NV | | More |
| 778 | 257 | South Kamloops | British Columbia | TELUS Mobility | WIRELESS PROV | More |
| 779 | 257 | WILMINGTON | Illinois | BANDWIDTH.COM CLEC, LLC - IL | | More |
| 780 | 257 | Edmonton | Alberta | Bell Mobility | WIRELESS PROV | More |
| 781 | 257 | BOSTON | Massachusetts | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA | CLEC | More |
| 785 | 257 | WOODBINE | Kansas | TRI-COUNTY TEL. ASSN., INC. | IND. TELCO | More |
| 786 | 257 | MIAMI | Florida | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 787 | 257 | CAROLINA | Puerto Rico | PUERTO RICO TEL. CO. | IND. TELCO | More |
| 801 | 257 | SALT LAKE CITY | Utah | QWEST CORPORATION | RBOC | More |
| 802 | 257 | BRATTLEBORO | Vermont | CONSOLIDATED COMMUNICATIONS OF VERMONT COMPANY | RBOC | More |
| 803 | 257 | JAMESTOWN | South Carolina | POWERTEL ATLANTA LICENSES, INC. | WIRELESS PROV | More |
| 804 | 257 | RICHMOND | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 805 | 257 | PASOROBLES | California | ONVOY, LLC - CA | | More |
| 806 | 257 | EARTH | Texas | WEST PLAINS TELECOMMUNICATIONS, INC. | IND. TELCO | More |
| 808 | 257 | KAILUA | Hawaii | HAWAIIAN TELCOM, INC. - HI | IND. TELCO | More |
| 810 | 257 | FLINT | Michigan | MICHIGAN BELL TEL CO | RBOC | More |
| 812 | 257 | WASHINGTON | Indiana | INDIANA BELL TEL CO INC | RBOC | More |
| 813 | 257 | TAMPACEN | Florida | LEVEL 3 COMMUNICATIONS, LLC - FL | CLEC | More |
| 814 | 257 | DAYTON | Pennsylvania | WINDSTREAM PENNSYLVANIA, INC. | IND. TELCO | More |
| 815 | 257 | STREATOR | Illinois | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | WIRELESS PROV | More |
| 816 | 257 | EAST INDEPENDENCE | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 817 | 257 | FORT WORTH EDISON | Texas | CAPROCK TELECOMMUNICATIONS CORP. - TX | CLEC | More |
| 818 | 257 | VAN NUYS | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 828 | 257 | ASHEVILLE | North Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 830 | 257 | KERRVILLE | Texas | WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. | IND. TELCO | More |
| 831 | 257 | APTOS | California | ONVOY, LLC - CA | | More |
| 832 | 257 | HOUSTON | Texas | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 838 | 257 | ATHENS | New York | NUSO, LLC | | More |
| 839 | 257 | AIKEN | South Carolina | POWERTEL ATLANTA LICENSES, INC. | WIRELESS PROV | More |
| 840 | 257 | COLTON | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 843 | 257 | JAMESTOWN | South Carolina | HOME TELEPHONE ILEC, LLC | IND. TELCO | More |
| 845 | 257 | KINGSTON | New York | PAETEC COMMUNICATIONS, INC. - NY | CLEC | More |
| 847 | 257 | CHICAGO | Illinois | OVATION COMMUNICATIONS OF ILLINOIS, INC. | CLEC | More |
| 848 | 257 | EATONTOWN | New Jersey | CABLEVISION LIGHTPATH, INC. - NJ | CLEC | More |
| 850 | 257 | PANAMA CITY | Florida | WINDSTREAM NUVOX, INC. | CLEC | More |
| 854 | 257 | BLUFFTON | South Carolina | COMMIO, LLC | | More |
| 856 | 257 | HADDON HTS | New Jersey | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | WIRELESS PROV | More |
| 857 | 257 | SOUTH BOSTON | Massachusetts | METROPCS, INC. | | More |
| 858 | 257 | LA JOLLA | California | LEVEL 3 COMMUNICATIONS, LLC - CA | CLEC | More |
| 859 | 257 | LEXINGTON U.K. | Kentucky | WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON | | More |
| 860 | 257 | WETHERSFIELD | Connecticut | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | IND. TELCO | More |
| 862 | 257 | PATERSON | New Jersey | CABLEVISION LIGHTPATH, INC. - NJ | CLEC | More |
| 863 | 257 | AVON PARK | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 864 | 257 | GREENVILLE | South Carolina | KINDER, ROBERT A. DBA TOTAL COMMUNICATION SYSTEMS | WIRELESS PROV | More |
| 865 | 257 | KNOXVILLE | Tennessee | UNITED STATES CELLULAR - TN | WIRELESS PROV | More |
| 870 | 257 | CHEROKEE VILLAGE | Arkansas | CENTURYTEL OF ARKANSAS, INC. DBA CENTURYLINK | IND. TELCO | More |
| 872 | 257 | CHICGOZN05 | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 878 | 257 | TAYLORSTN | Pennsylvania | LUMOS NETWORKS OF WEST VIRGINIA INC. - WV | CLEC | More |
| 901 | 257 | MEMPHIS | Tennessee | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 902 | 257 | WALLACE | Nova Scotia | Aliant Telecom (NS) | IND. TELCO | More |
| 903 | 257 | DALLAS | Texas | LEVEL 3 COMMUNICATIONS, LLC - TX | CLEC | More |
| 904 | 257 | BALDWIN | Florida | LEVEL 3 COMMUNICATIONS, LLC - FL | CLEC | More |
| 905 | 257 | OAKVILLE | Ontario | Bell Canada | IND. TELCO | More |
| 906 | 257 | CRYSTALFLS | Michigan | ONVOY, LLCV - MI | | More |
| 907 | 257 | ANCHORAGE | Alaska | ACS OF ANCHORAGE, INC. | IND. TELCO | More |
| 908 | 257 | FANWOOD | New Jersey | CORETEL NEW JERSEY, INC. - NJ | | More |
| 909 | 257 | LOS ANGELES - PAC W | California | PACIFIC BELL (COMPETITIVE) | CLEC | More |
| 910 | 257 | RALEIGH | North Carolina | SUNCOM DBA T-MOBILE USA | PCS | More |
| 912 | 257 | VALDOSTA | Georgia | SOUTHERN COMMUNICATIONS SERVICES, INC. | WIRELESS PROV | More |
| 913 | 257 | WOODBINE | Kansas | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 914 | 257 | KINGSTON | New York | CABLEVISION LIGHTPATH, INC. - NY | CLEC | More |
| 915 | 257 | EL PASO | Texas | BANDWIDTH.COM CLEC, LLC - TX | | More |
| 916 | 257 | ROSEVILLE: MAIN DA | California | METROPCS, INC. | | More |
| 917 | 257 | NEW YORK CITY ZONE | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 918 | 257 | AFTON | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 919 | 257 | DURHAM | North Carolina | AT&T - LOCAL | CLEC | More |
| 920 | 257 | APPLETON | Wisconsin | WISCONSIN BELL INC | RBOC | More |
| 925 | 257 | SAN FRANCISCO | California | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 928 | 257 | PHOENIX | Arizona | LEVEL 3 COMMUNICATIONS, LLC - AZ | | More |
| 929 | 257 | NWYRCYZN08 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 930 | 257 | CLEARSPRNG | Indiana | BANDWIDTH.COM CLEC, LLC - IN | | More |
| 931 | 257 | CLARKSVL | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 936 | 257 | DAYTON | Texas | SOUTHWESTERN BELL | RBOC | More |
| 937 | 257 | DAYTON | Ohio | LEVEL 3 TELECOM OF OHIO, LLC - OH | CLEC | More |
| 939 | 257 | BAYAMONNOR | Puerto Rico | PUERTO RICO TELCO DBA CLARO PUERTO RICO | WIRELESS PROV | More |
| 940 | 257 | WICHITA FALLS LAMAR | Texas | SOUTHWESTERN BELL | RBOC | More |
| 941 | 257 | TAMPA | Florida | LEVEL 3 COMMUNICATIONS, LLC - FL | CLEC | More |
| 943 | 257 | ATLANTA SO | Georgia | ONVOY, LLC - GA | | More |
| 945 | 257 | FRISCO | Texas | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 947 | 257 | PONTIAC | Michigan | DISH WIRELESS, LLC | | More |
| 949 | 257 | SANTA ANA | California | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 951 | 257 | IDYLLWILD | California | LEVEL 3 COMMUNICATIONS, LLC - CA | CLEC | More |
| 952 | 257 | NEW PRAGUE | Minnesota | ECKLES TEL. CO. | IND. TELCO | More |
| 954 | 257 | FORT LAUDERDALE | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 956 | 257 | HARLINGEN | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 959 | 257 | HARTFORD | Connecticut | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | WIRELESS PROV | More |
| 970 | 257 | GRAND JUNCTION | Colorado | QWEST CORPORATION | RBOC | More |
| 971 | 257 | CLOVERDALE | Oregon | CHARTER FIBERLINK OR-CCVII, LLC - OR | | More |
| 972 | 257 | IRVING | Texas | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | IND. TELCO | More |
| 973 | 257 | BOONTON | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 978 | 257 | ACTON | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 979 | 257 | EL CAMPO | Texas | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 980 | 257 | CHARLOTTE | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 984 | 257 | CREEDMOOR | North Carolina | BANDWIDTH.COM CLEC, LLC - NC | | More |
| 985 | 257 | DULAC | Louisiana | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 986 | 257 | RATHDRUM | Idaho | ONVOY, LLC - ID | | More |
| 989 | 257 | SIXTY LAKES | Michigan | CENTURYTEL OF MICHIGAN, INC. DBA CENTURYLINK | IND. TELCO | More |
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