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

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-505 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-506 A Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-507 A Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-508 A Pelham NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-509 A Rochester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-510 A Meriden NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-512 A Manchester NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2024-02-09   
603-513 A Concord NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-514 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-515 A Wolfeboro NH WLBONHGSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-516 A Dover NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-517 A Merrimack NH MNCHNHCO29Z  9748 AMERICAN MESSAGING SERVICES, LLC 122      
603-518 A Manchester NH MNCHNHCO37Z  7421 AT&T - LOCAL 122      
603-519 A Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-520 A Laconia NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-521 A Nashua NH MNCHNHCOA02  7421 AT&T - LOCAL 122      
603-522 A Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-523 A Canaan NH CANNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-524 A Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-525 A Hancock NH HNCCNHSCRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-526 A New London NH NWLNNHXARP0  0045 KEARSARGE TEL. CO. 122      
603-527 A Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-528 A Laconia NH LACNNHNMDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-529 A Weare NH WEARNHXADS1  0039 GRANITE STATE TEL., INC. 122      
603-530 A Bristol NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-531 A Portsmouth NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-532 A Jaffrey NH JFRYNHRIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-533 A Merrimack NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-534 A Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-535 A Plymouth NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-536 A Plymouth NH PLMONHLHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-537 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-538 A Pittsburg NH PSBGNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-539 A Center Ossipee NH CNOSNHFORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-540 A Manchester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-541 A Manchester NH MNCHNHCOPS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-542 A Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-543 A Claremont NH CLMTNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-544 A Melvin Village NH MLVGNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-545 A Concord NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-546 A Nashua NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-547 A Greenfield NH GNFDNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-548 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-549 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-550 A Dover NH MNCHNHCO22Z  073H TELNYX LLC 122      
603-551 A Manchester NH MNCHNHCODS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-552 A Derry NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-553 A Derry NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-554 A Milford NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-556 A Laconia NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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