Area Code | Prefix | City/Switch Name (Click for city search) | State/Prov. Area Map | Telephone Company Web link | Telco Type | More Info |
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| 201 | 601 | UNION CITY | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 202 | 601 | WSHNGTNZN1 | District of Columbia | LEVEL 3 TELECOM OF D.C., LLC - DC | CLEC | More |
| 203 | 601 | TRUMBULL | Connecticut | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | CAP | More |
| 204 | 601 | Anola | Manitoba | LES.NET (1996) Inc. | | More |
| 205 | 601 | BIRMINGHAM | Alabama | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 206 | 601 | SEATTLE | Washington | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 207 | 601 | LEWISTON | Maine | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 208 | 601 | COERDALENE | Idaho | CSC WIRELESS, LLC | | More |
| 209 | 601 | MANTECA | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 210 | 601 | SANANTONIO | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 212 | 601 | NWYRCYZN01 | New York | TC SYSTEMS, INC. - NY | CAP | More |
| 213 | 601 | LOS ANGELES | California | METROPCS NETWORKS, LLC | | More |
| 214 | 601 | GRANDPRARI | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 215 | 601 | PHPHSBZN33 | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 216 | 601 | CLEVELAND | Ohio | AMERICAN MESSAGING SERVICES, LLC | | More |
| 217 | 601 | FAIRMOUNT | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 218 | 601 | KABETOGAMA | Minnesota | PAUL BUNYAN RURAL TELEPHONE COOP. | CLEC | More |
| 224 | 601 | SKOKIE | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 229 | 601 | ALBANY | Georgia | DELTACOM, INC. - GA | CLEC | More |
| 234 | 601 | WESTFLDCTR | Ohio | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | CLEC | More |
| 239 | 601 | NAPLES | Florida | AT&T - LOCAL | CLEC | More |
| 240 | 601 | WSHNGTNZN3 | Maryland | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | WIRELESS PROV | More |
| 248 | 601 | ROCHESTER | Michigan | MICHIGAN BELL TEL CO | RBOC | More |
| 250 | 601 | ETWYND | British Columbia | Rogers Communications Partnership (Wireless) | WIRELESS PROV | More |
| 252 | 601 | WILLIAMSTN | North Carolina | US LEC OF NORTH CAROLINA, INC. | CLEC | More |
| 256 | 601 | FYFFE | Alabama | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | WIRELESS PROV | More |
| 260 | 601 | FORT WAYNE | Indiana | HRS INTERNET LLC DBA EVERSTREAM | | More |
| 267 | 601 | PHLDLPHZN1 | Pennsylvania | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 269 | 601 | BATTLE CRK | Michigan | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 270 | 601 | EDDYVILLE | Kentucky | LEVEL 3 COMMUNICATIONS, LLC - KY | CLEC | More |
| 276 | 601 | GALAX | Virginia | LEVEL 3 COMMUNICATIONS, LLC - VA | CLEC | More |
| 281 | 601 | PORTER | Texas | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | CLEC | More |
| 301 | 601 | WSNGTNZN10 | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 302 | 601 | DELAWARECY | Delaware | BANDWIDTH.COM CLEC, LLC - DE | | More |
| 303 | 601 | DENVER | Colorado | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 304 | 601 | LOGAN | West Virginia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV | WIRELESS PROV | More |
| 305 | 601 | MIAMI | Florida | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 306 | 601 | Kamsack | Saskatchewan | TELUS Mobility | PCS | More |
| 309 | 601 | MOLINE | Illinois | CS TECHNOLOGIES, INC. | | More |
| 310 | 601 | BEVERLYHLS | California | PACIFIC BELL | RBOC | More |
| 312 | 601 | CHICGOZN01 | Illinois | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 313 | 601 | DETROITZN5 | Michigan | AMERICAN MESSAGING SERVICES, LLC | | More |
| 314 | 601 | ST LOUIS | Missouri | SOUTHWESTERN BELL | RBOC | More |
| 315 | 601 | UTICA | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 316 | 601 | TOWANDA | Kansas | SPRINT SPECTRUM L.P. | PCS | More |
| 317 | 601 | INDIANAPLS | Indiana | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | WIRELESS PROV | More |
| 318 | 601 | KEITHVILLE | Louisiana | NORTHEAST TELECOM, LLC - LA | | More |
| 319 | 601 | BURLINGTON | Iowa | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 323 | 601 | LSAN DA 12 | California | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | CLEC | More |
| 325 | 601 | HAWLEY | Texas | TEXAS COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 330 | 601 | WOOSTER | Ohio | SUPER-NET, INC. - OH | | More |
| 336 | 601 | GREENSBORO | North Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | WIRELESS PROV | More |
| 337 | 601 | HENDERSON | Louisiana | ONVOY, LLC - LA | | More |
| 346 | 601 | HOUSTON | Texas | BANDWIDTH.COM CLEC, LLC - TX | | More |
| 347 | 601 | NWYRCYZN05 | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 352 | 601 | CRYSTALRIV | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 360 | 601 | VANCOUVER | Washington | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | | More |
| 361 | 601 | RIVIERA | Texas | FITCH, F. CARY | WIRELESS | More |
| 386 | 601 | DEBARY | Florida | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | CLEC | More |
| 401 | 601 | PROVIDENCE | Rhode Island | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI | WIRELESS PROV | More |
| 402 | 601 | LINCOLN | Nebraska | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 403 | 601 | HIGH RIVER | Alberta | TELUS | IND. TELCO | More |
| 404 | 601 | ATLANTA | Georgia | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | CLEC | More |
| 405 | 601 | OKLA CITY | Oklahoma | COMCAST IP PHONE, LLC | | More |
| 406 | 601 | BILLINGS | Montana | BLACKFOOT COMMUNICATIONS, INC. - MT | CLEC | More |
| 407 | 601 | ORLANDO | Florida | OMNIPOINT MIAMI E LICENSE, LLC | PCS | More |
| 408 | 601 | SNJS NORTH | California | BANDWIDTH.COM CLEC, LLC - CA | | More |
| 410 | 601 | BALTIMORE | Maryland | VERIZON MARYLAND, INC. | RBOC | More |
| 412 | 601 | GREENSBURG | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 414 | 601 | MILWAUKZN1 | Wisconsin | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 415 | 601 | SNFC CNTRL | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 416 | 601 | TORONTO | Ontario | Bell Canada | IND. TELCO | More |
| 417 | 601 | MONETT | Missouri | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 418 | 601 | St-Fidele | Quebec | Videotron General Partnership | CLEC | More |
| 419 | 601 | BOWLNGGREN | Ohio | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | WIRELESS PROV | More |
| 423 | 601 | BULLS GAP | Tennessee | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | RBOC | More |
| 440 | 601 | TRINITY | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 443 | 601 | FALLSTON | Maryland | CTC COMMUNICATIONS CORP. - MD | CLEC | More |
| 450 | 601 | VALLEYFIELD | Quebec | Bell Canada | IND. TELCO | More |
| 469 | 601 | GRANDPRARI | Texas | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 470 | 601 | ADAIRSVL | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 479 | 601 | FAYETTEVL | Arkansas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | WIRELESS PROV | More |
| 480 | 601 | PHOENIX | Arizona | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | WIRELESS PROV | More |
| 484 | 601 | NEWTRIPOLI | Pennsylvania | LEVEL 3 COMMUNICATIONS, LLC - PA | CLEC | More |
| 501 | 601 | FAYETTEVILLE | Arkansas | ONVOY, LLC - AR | | More |
| 502 | 601 | BARDSTOWN | Kentucky | POWERTEL KENTUCKY LICENSES, INC. | | More |
| 503 | 601 | BEAVERTON | Oregon | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | CLEC | More |
| 504 | 601 | HOUMA | Louisiana | WINDSTREAM NUVOX, INC. | CLEC | More |
| 505 | 601 | CLOUDCROFT | New Mexico | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 506 | 601 | Shippagan | New Brunswick | Rogers Communications Partnership (Cable) | | More |
| 507 | 601 | ROCHESTER | Minnesota | NUSO, LLC | | More |
| 509 | 601 | SPOKANE | Washington | TWILIO INTERNATIONAL, INC. | | More |
| 510 | 601 | OKLD MN-PD | California | PACIFIC BELL | RBOC | More |
| 512 | 601 | LYTTON SPG | Texas | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | IND. TELCO | More |
| 513 | 601 | CINCINNATI | Ohio | CINCINNATI BELL | IND. TELCO | More |
| 514 | 601 | MONTREAL | Quebec | Bell Mobility | WIRELESS PROV | More |
| 515 | 601 | DES MOINES | Iowa | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | WIRELESS PROV | More |
| 516 | 601 | NASSAU ZONE 2 | New York | CABLEVISION LIGHTPATH, INC. - NY | CLEC | More |
| 517 | 601 | MOUNT PLEASANT | Michigan | CENTENNIAL MICHIANA LICENSE COMPANY LLC | WIRELESS PROV | More |
| 518 | 601 | MINEVILLE | New York | PAETEC COMMUNICATIONS, INC. - NY | CLEC | More |
| 519 | 601 | London | Ontario | Rogers Communications Partnership (Cable) | | More |
| 520 | 601 | SHOW LOW | Arizona | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | WIRELESS PROV | More |
| 530 | 601 | DAVIS | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 540 | 601 | BLUE GRASS | Virginia | LEVEL 3 COMMUNICATIONS, LLC - VA | CLEC | More |
| 541 | 601 | MEDFORD | Oregon | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 559 | 601 | CARUTHERS | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 561 | 601 | WPALMBEACH | Florida | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 562 | 601 | CMTN CMTN | California | PACIFIC BELL | RBOC | More |
| 567 | 601 | ARLINGTON | Ohio | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | CLEC | More |
| 570 | 601 | WILLIAMSPT | Pennsylvania | CTSI, INC. - PA | CLEC | More |
| 571 | 601 | LEESBURG | Virginia | ONVOY, LLC - VA | | More |
| 573 | 601 | BISMARCK | Missouri | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 574 | 601 | LOGANSPORT | Indiana | METROPCS, INC. | | More |
| 575 | 601 | CLOUDCROFT | New Mexico | PVT NETWORKS, INC. - NM | | More |
| 580 | 601 | ADA | Oklahoma | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 581 | 601 | Albanel | Quebec | Telecommunications Xittel Inc | | More |
| 585 | 601 | HENRIETTA | New York | ONVOY, LLC- NY | | More |
| 586 | 601 | ROSEVILLE | Michigan | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | CLEC | More |
| 601 | 601 | JACKSON | Mississippi | ONVOY SPECTRUM, LLC | | More |
| 602 | 601 | PHOENIX | Arizona | WIDE VOICE, LLC - AZ | | More |
| 603 | 601 | HAMPTON | New Hampshire | PAETEC COMMUNICATIONS, INC. - NH | CLEC | More |
| 604 | 601 | VANCOUVER | British Columbia | TELUS | IND. TELCO | More |
| 605 | 601 | SIOUX FLS | South Dakota | TWILIO INTERNATIONAL, INC. | | More |
| 606 | 601 | ALLEN | Kentucky | WINDSTREAM NORLIGHT, INC. - KY | | More |
| 607 | 601 | ONEONTA | New York | ONVOY, LLC- NY | | More |
| 608 | 601 | CATARACT | Wisconsin | BANDWIDTH.COM CLEC, LLC - WI | | More |
| 609 | 601 | SOMERS PT | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 610 | 601 | CHESTERSPG | Pennsylvania | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | CLEC | More |
| 612 | 601 | TWINCITIES | Minnesota | METROPCS, INC. | | More |
| 613 | 601 | Ottawa-Hull | Ontario | Bell Mobility | WIRELESS PROV | More |
| 614 | 601 | WORTHINGTN | Ohio | AT&T - LOCAL | CLEC | More |
| 615 | 601 | NASHVILLE | Tennessee | BANDWIDTH.COM CLEC, LLC - TN | | More |
| 616 | 601 | BATTLE CREEK | Michigan | ONVOY SPECTRUM, LLC | | More |
| 617 | 601 | EVERETT | Massachusetts | NORFOLK COUNTY INTERNET, INC. | CLEC | More |
| 618 | 601 | CARBONDALE | Illinois | CHARTER FIBERLINK - ILLINOIS, LLC - IL | | More |
| 619 | 601 | SNDG SNDG | California | BANDWIDTH.COM CLEC, LLC - CA | | More |
| 620 | 601 | PRATT | Kansas | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 626 | 601 | LA PUENTE | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 630 | 601 | HINSDALE | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 631 | 601 | BRENTWOOD | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 641 | 601 | TRACY | Iowa | ONVOY SPECTRUM, LLC | | More |
| 646 | 601 | ATLANTA | Georgia | CENTURYLINK COMMUNICATIONS, LLC | | More |
| 657 | 601 | SANTA ANA | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 661 | 601 | BKFD NORTH | California | COMMIO, LLC | | More |
| 662 | 601 | BALDWYN | Mississippi | LEVEL 3 COMMUNICATIONS, LLC - MS | | More |
| 678 | 601 | ATLANTA | Georgia | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 701 | 601 | FORTUNA | North Dakota | SAGEBRUSH CELLULAR, INC. | | More |
| 702 | 601 | LAS VEGAS | Nevada | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 703 | 601 | WASZ 8 | Virginia | VERIZON VIRGINIA, INC. | RBOC | More |
| 704 | 601 | CHARLOTTE | North Carolina | GLOBAL CROSSING LOCAL SERVICES, INC. - NC | | More |
| 706 | 601 | ATHENS | Georgia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | WIRELESS PROV | More |
| 707 | 601 | EUREKA | California | UNITED STATES CELLULAR - CA | CLEC | More |
| 708 | 601 | BURR RIDGE | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 713 | 601 | HOUSTON | Texas | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 714 | 601 | ANAHEIM | California | UTILITY TELECOM GROUP, LLC - CA | | More |
| 715 | 601 | MONDOVI | Wisconsin | ONVOY, LLC - WI | | More |
| 716 | 601 | LANCASTER | New York | LEVEL 3 COMMUNICATIONS, LLC - NY | CLEC | More |
| 717 | 601 | CARLISLE | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 718 | 601 | NYCZ 5 | New York | VERIZON NEW YORK, INC. | RBOC | More |
| 719 | 601 | PUEBLO | Colorado | ONVOY, LLC - CO | | More |
| 720 | 601 | DENVER | Colorado | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | WIRELESS PROV | More |
| 724 | 601 | ROCHESTER | Pennsylvania | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | WIRELESS PROV | More |
| 727 | 601 | CLEARWATER | Florida | PEERLESS NETWORK OF FLORIDA, LLC - FL | | More |
| 732 | 601 | TOMS RIVER | New Jersey | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | | More |
| 734 | 601 | LIVONIA | Michigan | MICHIGAN BELL TEL CO | RBOC | More |
| 740 | 601 | CIRCLEVILLE | Ohio | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 757 | 601 | CLAREMONT | Virginia | CORETEL VIRGINIA, LLC - VA | | More |
| 760 | 601 | PALM SPRINGS (AT&T) | California | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | CLEC | More |
| 765 | 601 | FRANKFORT | Indiana | ONVOY, LLC - IN | | More |
| 770 | 601 | WINDER | Georgia | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 773 | 601 | CHCZ 11 | Illinois | ILLINOIS BELL TEL CO | RBOC | More |
| 774 | 601 | SOUTHBDG | Massachusetts | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | WIRELESS PROV | More |
| 779 | 601 | LA SALLE | Illinois | BANDWIDTH.COM CLEC, LLC - IL | | More |
| 780 | 601 | Sherwood Park | Alberta | Fido Solutions Inc. | | More |
| 781 | 601 | BURLINGTON | Massachusetts | VERIZON NEW ENGLAND INC. | RBOC | More |
| 785 | 601 | NORTON | Kansas | TELEPORT COMMUNICATIONS AMERICA, LLC - KS | CLEC | More |
| 786 | 601 | HOMESTEAD | Florida | US LEC OF FLORIDA, INC. | CLEC | More |
| 787 | 601 | PONCE | Puerto Rico | SUNCOM DBA T-MOBILE USA | PCS | More |
| 801 | 601 | SALT LAKE | Utah | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | CLEC | More |
| 802 | 601 | NORTON | Vermont | GLOBAL NAPS, INC. - VT | | More |
| 803 | 601 | CHESTER | South Carolina | TIME WARNER CBLE INFO SVC (SC) DBA TIME WARNER CBL | | More |
| 804 | 601 | MIDLOTHIAN | Virginia | LEVEL 3 COMMUNICATIONS, LLC - VA | CLEC | More |
| 805 | 601 | LOS ANGELES-ICG | California | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | | More |
| 806 | 601 | SUNRAY | Texas | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | | More |
| 808 | 601 | HONOLULU | Hawaii | TELEPORT COMMUNICATIONS AMERICA, LLC - HI | | More |
| 812 | 601 | BLOOMINGTON | Indiana | LEVEL 3 COMMUNICATIONS, LLC - IN | CLEC | More |
| 813 | 601 | TAMPA | Florida | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | WIRELESS PROV | More |
| 814 | 601 | EMPORIUM | Pennsylvania | LEVEL 3 COMMUNICATIONS, LLC - PA | CLEC | More |
| 815 | 601 | ROCKFORD | Illinois | UNITED STATES CELLULAR - IL | WIRELESS PROV | More |
| 816 | 601 | KANSAS CITY | Missouri | BANDWIDTH.COM CLEC, LLC - MO | | More |
| 817 | 601 | DALLAS | Texas | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | CLEC | More |
| 818 | 601 | VAN NUYS | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 819 | 601 | TROIS RIVIERES | Quebec | Videotron General Partnership | CLEC | More |
| 828 | 601 | HICKORY | North Carolina | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 831 | 601 | MONTEREY | California | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | WIRELESS PROV | More |
| 832 | 601 | HOUSTON GREENSPOINT | Texas | SOUTHWESTERN BELL | RBOC | More |
| 843 | 601 | FLORENCE | South Carolina | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | WIRELESS PROV | More |
| 845 | 601 | NEWBURGH | New York | AMERICAN MESSAGING SERVICES, LLC | | More |
| 847 | 601 | BURR RIDGE | Illinois | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
| 850 | 601 | TALLAHASSEE | Florida | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | CLEC | More |
| 856 | 601 | CAMDEN | New Jersey | CALLWORKS CORPORATION | | More |
| 860 | 601 | TORRINGTON | Connecticut | METROPCS, INC. | | More |
| 864 | 601 | GREENVILLE | South Carolina | WINDSTREAM NUVOX, INC. | CLEC | More |
| 865 | 601 | KINGSTON | Tennessee | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | WIRELESS PROV | More |
| 870 | 601 | GASSVILLE | Arkansas | TELEPORT COMMUNICATIONS AMERICA, LLC - AR | | More |
| 901 | 601 | MEMPHIS | Tennessee | POWERTEL MEMPHIS LICENSES, INC. | WIRELESS PROV | More |
| 903 | 601 | JEFFERSON | Texas | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | WIRELESS PROV | More |
| 904 | 601 | FERNADNBCH | Florida | ONVOY, LLC - FL | | More |
| 905 | 601 | STREETSVILLE | Ontario | Bell Mobility | WIRELESS PROV | More |
| 908 | 601 | MIDDLETOWN | New Jersey | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | WIRELESS PROV | More |
| 909 | 601 | SUNNYMEAD | California | T-MOBILE USA, INC. | WIRELESS PROV | More |
| 910 | 601 | RICHLANDS | North Carolina | ONVOY, LLC - NC | | More |
| 912 | 601 | REGISTER | Georgia | POWERTEL ATLANTA LICENSES, INC. | WIRELESS PROV | More |
| 913 | 601 | KANSASCITY | Kansas | AERIAL COMMUNICATIONS, INC. | WIRELESS PROV | More |
| 914 | 601 | WESTCHESTER ZONE 1 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 916 | 601 | SACRAMENTO: MAIN DA | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 917 | 601 | NEW YORK CITY ZONE | New York | NEW CINGULAR WIRELESS PCS, LLC - DC | WIRELESS PROV | More |
| 918 | 601 | GROVE | Oklahoma | ONVOY, LLC - OK | | More |
| 919 | 601 | RALEIGH | North Carolina | NEW CINGULAR WIRELESS PCS, LLC - GA | WIRELESS PROV | More |
| 920 | 601 | WRIGHTSTN | Wisconsin | PEERLESS NETWORK OF WISCONSIN, LLC - WI | | More |
| 928 | 601 | SHOW LOW | Arizona | WAYNE MARKIS DBA HANDY PAGE | WIRELESS PROV | More |
| 929 | 601 | NWYRCYZN10 | New York | OMNIPOINT COMMUNICATIONS, INC. - NY | WIRELESS PROV | More |
| 931 | 601 | COLUMBIA | Tennessee | ALEC, LLC - TN | CLEC | More |
| 937 | 601 | WMANSFIELD | Ohio | LEVEL 3 COMMUNICATIONS, LLC - OH | CLEC | More |
| 940 | 601 | BOWIE | Texas | CHOICE WIRELESS, LC | | More |
| 941 | 601 | FORT MEYERS | Florida | AT&T - LOCAL - FL | CLEC | More |
| 949 | 601 | SADLBK VLY | California | NEW CINGULAR WIRELESS PCS, LLC | WIRELESS PROV | More |
| 951 | 601 | MORENO | California | FRONTIER CALIFORNIA INC. | IND. TELCO | More |
| 952 | 601 | TWIN CITIES | Minnesota | USA MOBILITY WIRELESS, INC. | WIRELESS PROV | More |
| 954 | 601 | MIAMI | Florida | WINDSTREAM NUVOX, INC. | CLEC | More |
| 956 | 601 | PHARR | Texas | TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL | | More |
| 970 | 601 | FRUITA | Colorado | ONVOY, LLC - CO | | More |
| 971 | 601 | SEASIDE | Oregon | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | | More |
| 972 | 601 | DALLAS MIDCITIES | Texas | SOUTHWESTERN BELL | RBOC | More |
| 973 | 601 | HOPATCONG | New Jersey | VERIZON NEW JERSEY, INC. | RBOC | More |
| 978 | 601 | MAYNARD | Massachusetts | METROPCS, INC. | | More |
| 985 | 601 | NEW ORLEANS | Louisiana | WINDSTREAM NUVOX, INC. | CLEC | More |
| 989 | 601 | MOUNT PLEASANT | Michigan | NEW CINGULAR WIRELESS PCS, LLC - IL | WIRELESS PROV | More |
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