Area
Code | Prefix | City/Switch Name
(Click for city search) | State/Prov.
Area Map | Telephone Company
Web link | Telco
Type | More
Info |
|---|
| 201 | 577 | JERSEYCITY | New Jersey | TW TELECOM OF NEW JERSEY LP - NJ | CLEC | More |
| 202 | 577 | WSHNGTNZN1 | District of Columbia | VERIZON WASHINGTON, DC INC. | RBOC | More |
| 203 | 577 | WATERBURY | Connecticut | SOUTHERN NEW ENGLAND TELEPHONE CO. | IND. TELCO | More |
| 204 | 577 | Reston | Manitoba | Provincial Tel Inc. | | More |
| 205 | 577 | LEEDS | Alabama | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | WIRELESS PROV | More |
| 206 | 577 | SEATTLE | Washington | GLOBAL CROSSING LOCAL SERVICES, INC.-WA | CLEC | More |
| 207 | 577 | LEWISTON | Maine | BELL ATLANTIC NYNEX MOBILE | WIRELESS PROV | More |
| 208 | 577 | BOISE | Idaho | AT&T LOCAL | CLEC | More |
| 209 | 577 | MODESTO | California | PACIFIC BELL | RBOC | More |
| 210 | 577 | SANANTONIO | Texas | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 212 | 577 | NWYRCYZN01 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 214 | 577 | GRANDPRARI | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 215 | 577 | PHLDLPHZN2 | Pennsylvania | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 216 | 577 | CLEVELAND | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 217 | 577 | QUINCY | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 219 | 577 | CROWNPOINT | Indiana | FBN INDIANA, INC.-IN | CLEC | More |
| 224 | 577 | ROUND LAKE | Illinois | SPRINT SPECTRUM L.P. | PCS | More |
| 229 | 577 | OMEGA | Georgia | MCC TELEPHONY OF GEORGIA, LLC - GA | | More |
| 231 | 577 | CADILLAC | Michigan | LEVEL 3 COMMUNICATIONS, LLC - MI | CLEC | More |
| 240 | 577 | LEONARDTN | Maryland | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | WIRELESS PROV | More |
| 248 | 577 | ROYAL OAK | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 250 | 577 | PRITCHARD | British Columbia | TELUS | IND. TELCO | More |
| 251 | 577 | MCCULLOUGH | Alabama | FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL | IND. TELCO | More |
| 252 | 577 | NEW BERN | North Carolina | DELTACOM, INC. - NC | CLEC | More |
| 254 | 577 | COPPERASCV | Texas | LEVEL 3 COMMUNICATIONS, LLC - TX | CLEC | More |
| 256 | 577 | ROGERSVL | Alabama | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 260 | 577 | POKAGON | Indiana | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 262 | 577 | KENOSHA | Wisconsin | SBC INTERNET SERVICES, INC. | | More |
| 267 | 577 | PHPHSBZN33 | Pennsylvania | OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. | WIRELESS PROV | More |
| 269 | 577 | KALAMAZOO | Michigan | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 270 | 577 | HENDERSON | Kentucky | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 281 | 577 | PORTER | Texas | CENTRAL TEL. CO. OF TEXAS DBA CENTURYLINK | IND. TELCO | More |
| 289 | 577 | Unionville | Ontario | Fibernetics Corporation | | More |
| 301 | 577 | WSHNGTNZN4 | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 302 | 577 | WILMINGTON | Delaware | VERIZON DELAWARE, INC. | RBOC | More |
| 303 | 577 | AURORA | Colorado | ESCHELON TELECOM OF COLORADO, INC. - CO | | More |
| 304 | 577 | WALTON | West Virginia | FRONTIER WEST VIRGINIA INC. | RBOC | More |
| 305 | 577 | MIAMI | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 306 | 577 | CARLYLE | Saskatchewan | SaskTel | IND. TELCO | More |
| 307 | 577 | CASPER | Wyoming | QWEST CORPORATION | RBOC | More |
| 308 | 577 | ASHBY | Nebraska | CONSOLIDATED TELEPHONE CO., INC. | IND. TELCO | More |
| 309 | 577 | MOSSVILLE | Illinois | FRONTIER NORTH, INC. - IL | IND. TELCO | More |
| 310 | 577 | SNMN MRVS | California | VERIZON CALIFORNIA INC.-CA (GTE) | IND. TELCO | More |
| 312 | 577 | CHICGOZN01 | Illinois | MCI WORLDCOM COMMUNICATIONS, INC. - IL | CLEC | More |
| 313 | 577 | DETROITZN1 | Michigan | AMERITECH MICHIGAN | RBOC | More |
| 314 | 577 | ST LOUIS | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 315 | 577 | WATERLOO | New York | WARWICK VALLEY MOBILE TELEPHONE COMPANY - NY | CLEC | More |
| 316 | 577 | WICHITA | Kansas | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 317 | 577 | FISHERS | Indiana | AMERITECH INDIANA | RBOC | More |
| 318 | 577 | SALINE | Louisiana | NORTHEAST TELECOM, LLC - LA | | More |
| 319 | 577 | GOOSE LAKE | Iowa | PRESTON TELEPHONE CO. | IND. TELCO | More |
| 320 | 577 | HERMAN | Minnesota | RUNESTONE TELEPHONE ASSOCIATION - MN | CLEC | More |
| 321 | 577 | TITUSVILLE | Florida | PEERLESS NETWORK OF FLORIDA, LLC - FL | | More |
| 323 | 577 | LSAN DA 04 | California | TW TELECOM OF CALIFORNIA LP - CA | CLEC | More |
| 325 | 577 | TRENT | Texas | TEXAS COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 330 | 577 | RAVENNA | Ohio | NUVOX COMMUNICATIONS OF OHIO, INC. - OH | | More |
| 334 | 577 | ECLECTIC | Alabama | LEVEL 3 COMMUNICATIONS, LLC - AL | | More |
| 336 | 577 | WINSTN SAL | North Carolina | SPRINT SPECTRUM L.P. | PCS | More |
| 337 | 577 | NEW IBERIA | Louisiana | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 347 | 577 | NWYRCYZN03 | New York | CABLEVISION LIGHTPATH, INC. - NY | CLEC | More |
| 352 | 577 | BRONSON | Florida | SPRINT SPECTRUM L.P. | PCS | More |
| 360 | 577 | LONGVIEW | Washington | QWEST CORPORATION | RBOC | More |
| 361 | 577 | VICTORIA | Texas | AWESOME PAGING, INC. | WIRELESS PROV | More |
| 401 | 577 | GREENWICH | Rhode Island | SPRINT COMMUNICATIONS COMPANY, L.P. - RI | CLEC | More |
| 402 | 577 | OMAHA | Nebraska | QWEST CORPORATION | RBOC | More |
| 403 | 577 | CONSORT | Alberta | TELUS | IND. TELCO | More |
| 404 | 577 | ATLANTA | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 405 | 577 | YUKON | Oklahoma | SOUTHWESTERN BELL | RBOC | More |
| 406 | 577 | BOZEMAN | Montana | ONVOY, LLC - MT | | More |
| 407 | 577 | ORLANDO | Florida | SPRINT SPECTRUM L.P. | PCS | More |
| 408 | 577 | SNJS NORTH | California | PACIFIC BELL | RBOC | More |
| 410 | 577 | PIKESVILLE | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 412 | 577 | PTTSBGZON1 | Pennsylvania | VERIZON PENNSYLVANIA, INC. | RBOC | More |
| 413 | 577 | AMHERST | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 414 | 577 | MILWAUKZN4 | Wisconsin | AMERITECH WISCONSIN | RBOC | More |
| 415 | 577 | SNFC CNTRL | California | SPRINT SPECTRUM L.P. | PCS | More |
| 416 | 577 | TORONTO | Ontario | Bell Mobility | WIRELESS PROV | More |
| 417 | 577 | SPRINGFLD | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 418 | 577 | QUEBEC | Quebec | Bell Canada | IND. TELCO | More |
| 419 | 577 | NORWALK | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 423 | 577 | ONEIDA | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 425 | 577 | SEATTLE | Washington | TELEPORT COMMUNICATIONS GROUP - SEATTLE | CAP | More |
| 432 | 577 | ODESSA | Texas | NTS COMMUNICATIONS, INC. | CLEC | More |
| 434 | 577 | SOBRUNSWIK | Virginia | VERIZON SOUTH INC.-VA (CONTEL) | IND. TELCO | More |
| 435 | 577 | CIRCLEVL | Utah | SOUTH CENTRAL UTAH TELEPHONE ASSOCIATION, INC. | IND. TELCO | More |
| 440 | 577 | PIERPONT | Ohio | WINDSTREAM WESTERN RESERVE, INC. | IND. TELCO | More |
| 443 | 577 | GLENBURNIE | Maryland | US LEC OF MARYLAND, INC. | CLEC | More |
| 450 | 577 | GRANBY | Quebec | Rogers Communications Partnership (Wireless) | WIRELESS PROV | More |
| 470 | 577 | GAINESVL | Georgia | NEUTRAL TANDEM-GEORGIA, LLC - GA | | More |
| 479 | 577 | BOLES | Arkansas | CENTURYTEL NW AR-RUSSELVL DBA CENTURYLINK-RUSSELLV | | More |
| 480 | 577 | PHOENIX | Arizona | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 484 | 577 | READING | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 501 | 577 | BOLES | Arkansas | CENTURYTEL NW AR-RUSSELVL DBA CENTURYLINK-RUSSELLV | | More |
| 502 | 577 | XXXXXXXXXX | Kentucky | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 503 | 577 | PORTLAND | Oregon | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | | More |
| 504 | 577 | NEWORLEANS | Louisiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA | WIRELESS PROV | More |
| 505 | 577 | SANTA FE | New Mexico | SPRINT SPECTRUM L.P. | PCS | More |
| 506 | 577 | CAP PELE | New Brunswick | Aliant Telecom(NB) | IND. TELCO | More |
| 508 | 577 | BROCKTON | Massachusetts | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 509 | 577 | YAKIMA | Washington | QWEST CORPORATION | RBOC | More |
| 510 | 577 | OKLD TRNID | California | PACIFIC BELL | RBOC | More |
| 512 | 577 | AUSTIN | Texas | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 513 | 577 | CINCINNATI | Ohio | CINCINNATI BELL, INC. | IND. TELCO | More |
| 514 | 577 | MONTREAL | Quebec | Fido Solutions Inc. | | More |
| 515 | 577 | DES MOINES | Iowa | UNITED STATES CELLULAR CORP. - IOWA | WIRELESS PROV | More |
| 516 | 577 | FARMINGDL | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 517 | 577 | BAY CITY | Michigan | COMLINK, LLC - MI | | More |
| 518 | 577 | ALBANY | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 519 | 577 | KITCHENER | Ontario | Bell Mobility | WIRELESS PROV | More |
| 520 | 577 | TUCSON | Arizona | QWEST CORPORATION | RBOC | More |
| 530 | 577 | SOUTHTAHOE | California | PACIFIC BELL | RBOC | More |
| 540 | 577 | RADFORD | Virginia | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 541 | 577 | JOSEPH | Oregon | FRONTIER COMMUNICATIONS NORTHWEST, INC. - OR | IND. TELCO | More |
| 559 | 577 | FRESNO | California | U.S. TELEPACIFIC CORP. - CA | CLEC | More |
| 561 | 577 | BOYNTONBCH | Florida | METRO PCS, INC. | | More |
| 562 | 577 | LONG BEACH | California | SPRINT SPECTRUM L.P. | PCS | More |
| 563 | 577 | GOOSE LAKE | Iowa | PRESTON TELEPHONE CO. | IND. TELCO | More |
| 570 | 577 | LEWISBURG | Pennsylvania | WINDSTREAM BUFFALO VALLEY, INC. | IND. TELCO | More |
| 571 | 577 | LEESBURG | Virginia | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 573 | 577 | NEW LONDON | Missouri | SPRINT SPECTRUM L.P. | PCS | More |
| 586 | 577 | WARREN | Michigan | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC | | More |
| 601 | 577 | LAUREL | Mississippi | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | WIRELESS PROV | More |
| 602 | 577 | PHOENIX | Arizona | SPRINT SPECTRUM L.P. | PCS | More |
| 603 | 577 | NASHUA | New Hampshire | NO NEW ENGLAND TEL OP DBA FAIRPOINT COMM - NH | RBOC | More |
| 604 | 577 | Cloverdale | British Columbia | TELUS | IND. TELCO | More |
| 605 | 577 | LONG LAKE | South Dakota | VALLEY TELECOM COOPERATIVE ASSOCIATION, INC. | IND. TELCO | More |
| 606 | 577 | PINEVILLE | Kentucky | SE ACQUISITIONS, LLC DBA LIGHTYEAR NTWK SOL OF KY | CAP | More |
| 608 | 577 | MADISON | Wisconsin | UNITED STATES CELLULAR CORP. - WISCONSIN | WIRELESS PROV | More |
| 609 | 577 | TRENTON | New Jersey | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | WIRELESS PROV | More |
| 610 | 577 | LEHIGHTON | Pennsylvania | CHOICE ONE COMMUNICATIONS, INC. - PA | CLEC | More |
| 613 | 577 | Cornwall | Ontario | TELUS Mobility | CAP | More |
| 614 | 577 | REYNOLDSBG | Ohio | AMERITECH OHIO | RBOC | More |
| 615 | 577 | NASHVILLE | Tennessee | TW TELECOM OF TENNESSEE LLC - TN | CLEC | More |
| 616 | 577 | KALAMAZOO | Michigan | LEVEL 3 COMMUNICATIONS, LLC - MI | CLEC | More |
| 617 | 577 | CAMBRIDGE | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 618 | 577 | SALEM | Illinois | AT&T LOCAL | CLEC | More |
| 619 | 577 | SNDG SNDG | California | WIDE VOICE, LLC - CA | | More |
| 620 | 577 | INDEPNDNCE | Kansas | LEVEL 3 COMMUNICATIONS, LLC - KS | | More |
| 626 | 577 | PSDN PSDN | California | PACIFIC BELL | RBOC | More |
| 630 | 577 | NAPERVILLE | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 631 | 577 | FARMINGDALE | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 636 | 577 | ST PETERS | Missouri | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 646 | 577 | NWYRCYZN03 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 650 | 577 | SAN MATEO | California | PACIFIC BELL | RBOC | More |
| 661 | 577 | TAFT | California | SPRINT SPECTRUM L.P. | PCS | More |
| 662 | 577 | INDIANOLA | Mississippi | LEVEL 3 COMMUNICATIONS, LLC - MS | | More |
| 678 | 577 | MONTICELLO | Georgia | AT&T LOCAL | CLEC | More |
| 681 | 577 | WIDEN | West Virginia | CORETEL VIRGINIA, LLC - WV | | More |
| 701 | 577 | WILLISTON | North Dakota | MISSOURI VALLEY COMMUNICATIONS, INC. | | More |
| 702 | 577 | LAS VEGAS | Nevada | TCG LOS ANGELES, INC - NV | | More |
| 703 | 577 | WASHINGTON ZONE 8 | Virginia | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 704 | 577 | CHARLOTTE | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 705 | 577 | Kapuskasing | Ontario | Rogers Communications Partnership (Wireless) | WIRELESS PROV | More |
| 706 | 577 | COLUMBUS | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 707 | 577 | SANTA ROSA | California | PACIFIC BELL | RBOC | More |
| 708 | 577 | BLUEISLAND | Illinois | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 712 | 577 | SIOUX CITY | Iowa | IOWA WIRELESS SERVICES, LP | PCS | More |
| 713 | 577 | HOUSTON | Texas | AT&T LOCAL | CLEC | More |
| 714 | 577 | PLACENTIA | California | PACIFIC BELL | RBOC | More |
| 715 | 577 | EAU CLAIRE | Wisconsin | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | WIRELESS PROV | More |
| 716 | 577 | ROCHESTER | New York | CCCNY, INC. DBA CONNECT! | CLEC | More |
| 717 | 577 | YORK | Pennsylvania | SPRINT SPECTRUM L.P.- PA | PCS | More |
| 718 | 577 | NEW YORK CITY ZONE | New York | RCN TELECOM SERVICES, INC. - NY | CLEC | More |
| 719 | 577 | COLORADO SPRINGS | Colorado | QWEST CORPORATION | RBOC | More |
| 720 | 577 | DENVER | Colorado | LEVEL 3 COMMUNICATIONS, LLC - CO | CLEC | More |
| 724 | 577 | PITTSBURGH | Pennsylvania | TCG PITTSBURGH, INC. | CAP | More |
| 727 | 577 | SAINT PETERSBURG | Florida | VERIZON FLORIDA INC. | IND. TELCO | More |
| 731 | 577 | BETHEL SPG | Tennessee | LEVEL 3 COMMUNICATIONS, LLC - TN | CLEC | More |
| 732 | 577 | FREEHOLD | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 734 | 577 | YPSILANTI | Michigan | NEUTRAL TANDEM-MICHIGAN, LLC - MI | | More |
| 740 | 577 | JACKSON | Ohio | FRONTIER NORTH, INC. - OH | IND. TELCO | More |
| 757 | 577 | NORFOLK ZONE 1 | Virginia | SPRINT SPECTRUM L.P. | PCS | More |
| 760 | 577 | SOUTH BARSTOW | California | VERIZON CALIFORNIA INC.-CA | IND. TELCO | More |
| 763 | 577 | MNPZ 9 | Minnesota | QWEST CORPORATION | RBOC | More |
| 765 | 577 | JAMESTOWN | Indiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | WIRELESS PROV | More |
| 770 | 577 | DOUGLASVILLE | Georgia | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 772 | 577 | FORTPIERCE | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 773 | 577 | CHICAGO | Illinois | OVATION COMMUNICATIONS OF ILLINOIS, INC. | CLEC | More |
| 775 | 577 | SILVER SPRINGS | Nevada | NEVADA BELL | RBOC | More |
| 780 | 577 | Edmonton | Alberta | TELUS | IND. TELCO | More |
| 781 | 577 | BOSTON | Massachusetts | BROADWING COMMUNICATIONS, LLC - MA | CLEC | More |
| 785 | 577 | SALINA | Kansas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | WIRELESS PROV | More |
| 786 | 577 | MIAMI | Florida | WIDE VOICE, LLC - FL | | More |
| 787 | 577 | BAYAMON NORTE | Puerto Rico | BORINQUEN BEEPERS INC. | WIRELESS PROV | More |
| 801 | 577 | SALT LAKE CITY | Utah | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 803 | 577 | LANCASTER | South Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | WIRELESS PROV | More |
| 804 | 577 | SOUTH BRUNSWICK | Virginia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | WIRELESS PROV | More |
| 805 | 577 | SIMI VALLEY | California | PACIFIC BELL | RBOC | More |
| 806 | 577 | LUBBOCK | Texas | LEVEL 3 COMMUNICATIONS, LLC - TX | CLEC | More |
| 807 | 577 | THUNDER BAY | Ontario | Thunder Bay Telephone | IND. TELCO | More |
| 808 | 577 | KAKAAKO | Hawaii | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 810 | 577 | FLINT | Michigan | SPRINT SPECTRUM L.P. | PCS | More |
| 812 | 577 | BLOOMINGTON | Indiana | COMCAST PHONE OF CENTRAL INDIANA, LLC - IN | | More |
| 813 | 577 | TAMPACEN | Florida | WIDE VOICE, LLC - FL | | More |
| 814 | 577 | CLEARFIELD | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 815 | 577 | PLAINFIELD | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 817 | 577 | FORT WORTH N. RICHL | Texas | SOUTHWESTERN BELL | RBOC | More |
| 818 | 577 | CANOGA PARK | California | TELEPORT COMMUNICATIONS GROUP - LOS ANGELES | CLEC | More |
| 819 | 577 | SHERBROOKE | Quebec | Bell Canada | IND. TELCO | More |
| 828 | 577 | BREVARD | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 830 | 577 | NEW BRAUNFELS | Texas | AMERICAN MESSAGING (AM), INC. | | More |
| 832 | 577 | HOUSTON | Texas | SPRINT SPECTRUM L.P. | PCS | More |
| 843 | 577 | CHARLESTON | South Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 845 | 577 | SPRING VALLEY | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 847 | 577 | ARLINGTON HEIGHTS | Illinois | AMERITECH ILLINOIS | RBOC | More |
| 850 | 577 | TALLAHASSEE | Florida | EMBARQ FLORIDA INC. (CENTRAL) DBA CENTURYLINK | IND. TELCO | More |
| 856 | 577 | PENNSAUKEN | New Jersey | SPRINT SPECTRUM L.P. | PCS | More |
| 857 | 577 | CHARLESTN | Massachusetts | NEUTRAL TANDEM-MASSACHUSETTS, LLC - MA | | More |
| 858 | 577 | SAN DIEGO | California | PACIFIC BELL | RBOC | More |
| 859 | 577 | WINCHESTER | Kentucky | YMAX COMMUNICATIONS CORP. - KY | | More |
| 860 | 577 | CONNECTICUT | Connecticut | TELEPORT COMMUNICATIONS GROUP - NEW YORK - CT | CAP | More |
| 863 | 577 | WINTER HAVEN | Florida | NUVOX COMMUNICATIONS | CLEC | More |
| 864 | 577 | SPARTANBURG | South Carolina | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 865 | 577 | KNOXVILLE | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 870 | 577 | HARRISON | Arkansas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | WIRELESS PROV | More |
| 901 | 577 | MEMPHIS | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 902 | 577 | Sydney | Nova Scotia | Aliant Telecom (Mobility) | | More |
| 903 | 577 | MOUNT PLEASANT | Texas | SOUTHWESTERN BELL | RBOC | More |
| 904 | 577 | JACKSONVILLE | Florida | XO FLORIDA, INC. | CLEC | More |
| 905 | 577 | HAMILTON | Ontario | Bell Canada | IND. TELCO | More |
| 907 | 577 | ADKUSNVLST | Alaska | WINDY CITY CELLULAR | | More |
| 908 | 577 | NEWARK | New Jersey | TELEPORT COMMUNICATIONS GROUP - NEW YORK - NJ | CAP | More |
| 909 | 577 | CLAREMONT-SAN DIMAS | California | CROWN CELLULAR & PAGING | WIRELS RESELLER | More |
| 910 | 577 | JACKSONVILLE | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 912 | 577 | BRUNSWICK | Georgia | SPRINT SPECTRUM L.P. | PCS | More |
| 913 | 577 | LENEXA | Kansas | SOUTHWESTERN BELL | RBOC | More |
| 914 | 577 | SPRING VALLEY | New York | BELL ATLANTIC NY | RBOC | More |
| 915 | 577 | EL PASO MAIN | Texas | SOUTHWESTERN BELL | RBOC | More |
| 916 | 577 | SACRAMENTO | California | XO CALIFORNIA, INC. | CLEC | More |
| 917 | 577 | NEW YORK CITY ZONE | New York | SPRINT SPECTRUM L.P. | PCS | More |
| 918 | 577 | TULSA | Oklahoma | CEBRIDGE TELECOM OK, LLC DBA SUDDENLINK COMMS - OK | | More |
| 919 | 577 | FUQUAY-VARINA | North Carolina | CAROLINA TEL AND TEL CO., LLC DBA CENTURYLINK | IND. TELCO | More |
| 920 | 577 | SHEBOYGAN | Wisconsin | AMERICAN MESSAGING (AM), INC. | | More |
| 925 | 577 | DUBLN-SNRM | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 928 | 577 | MOHAVE VLY | Arizona | AZTECH COMMUNICATIONS, INC - AZ | | More |
| 936 | 577 | HUNTSVILLE | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 937 | 577 | CLARKSVL | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 940 | 577 | DECATUR | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 947 | 577 | CLARKSTON | Michigan | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | WIRELESS PROV | More |
| 954 | 577 | FORT LAUDERDALE | Florida | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | RBOC | More |
| 956 | 577 | HARLINGEN | Texas | SOUTHWESTERN BELL | RBOC | More |
| 970 | 577 | ESTES PARK | Colorado | QWEST CORPORATION | RBOC | More |
| 972 | 577 | DALLAS | Texas | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 973 | 577 | NEWARK | New Jersey | MCI WORLDCOM COMMUNICATIONS, INC., NJ | CLEC | More |
| 978 | 577 | BOSTON | Massachusetts | PAETEC COMMUNICATIONS, INC. | CLEC | More |
| 979 | 577 | LA GRANGE | Texas | TEXAS COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 989 | 577 | BAY CITY | Michigan | ONVOY, INC. - MI | | More |
|
