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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-449 2 Milan NH MILNNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 3 Milan NH MILNNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 4 Milan NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-10-25   
603-449 6 Milan NH   145J TERRA NOVA TELECOM INC. 122   2025-08-30   
603-449 9 Milan NH MILNNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-20   
603-450 A Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-450 0 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-06-05   
603-450 1 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 2 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 3 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 4 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 5 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 6 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 7 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 8 Concord NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 9 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2018-11-11   
603-451 A Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-451 0 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-04-13   
603-451 1 Concord NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-04-23   
603-451 2 Concord NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-451 3 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2020-09-04   
603-451 4 Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2020-11-06   
603-451 5 Concord NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2020-12-21   
603-451 6 Concord NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2020-12-18   
603-451 7 Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-05-23   
603-451 8 Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-05-23   
603-451 9 Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2020-05-23   
603-452 A Conway NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-452 0 Conway NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-452 1 Conway NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-452 2 Conway NH   145J TERRA NOVA TELECOM INC. 122   2025-10-11   
603-452 4 Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2012-04-17   
603-452 5 Conway NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2006-10-30   
603-452 7 Conway NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-452 8 Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-10-22   
603-453 A Hampstead NH MNCHNHCO37Z  7421 AT&T - LOCAL 122      
603-453 0 Hampstead NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-11-26   
603-453 1 Hampstead NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-12-02   
603-453 2 Hampstead NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-05-28   
603-453 3 Hampstead NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-03-08   
603-453 4 Hampstead NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-10-08   
603-453 5 Hampstead NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-02-20   
603-453 6 Hampstead NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2021-07-07   
603-453 8 Hampstead NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-12-04   
603-453 9 Hampstead NH MNCHNHCO37Z  7421 AT&T - LOCAL 122   2021-07-07   
603-454 A Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 4 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 5 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 6 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 7 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 8 Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-454 9 Sunapee NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   
603-455 A Laconia NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-455 0 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 1 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 2 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 3 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 4 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 5 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 6 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 7 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 8 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-455 9 Laconia NH   6290 UNITED STATES CELLULAR - NH 122      
603-456 A Warner NH WRNRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-456 0 Warner NH WRNRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-456 1 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-03-11   
603-456 2 Warner NH WRNRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-456 3 Warner NH WRNRNHXARP0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-456 4 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-07-23   
603-456 5 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-09-05   
603-456 8 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-07-01   
603-456 9 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-10-19   
603-457 A Dover NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122      
603-457 0 Dover NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-07-02   
603-457 1 Dover NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-07-02   
603-457 2 Dover NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2021-01-18   
603-457 3 Dover NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-07-02   
603-457 4 Dover NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-03-25   
603-457 5 Dover NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-07-02   
603-457 6 Dover NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-07-02   
603-457 7 Dover NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-07   
603-457 8 Dover NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-05-01   
603-457 9 Dover NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-01-19   
603-458 A Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-458 0 Salem NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-09-29   
603-458 1 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-458 2 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-458 3 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2022-09-21   
603-458 4 Salem NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-06-12   
603-458 5 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-458 6 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2011-03-04   
603-458 7 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2012-06-03   
603-458 8 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-09-28   
603-458 9 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2022-09-21   
603-459 A Nashua NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-459 0 Nashua NH   829J PAETEC ITEL, LLC 122      
603-459 1 Nashua NH   829J PAETEC ITEL, LLC 122      
603-459 2 Nashua NH   829J PAETEC ITEL, LLC 122      
603-459 3 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-07-02   
603-459 4 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-05-02   

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Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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