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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
603-518 8 Manchester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-02-09   
603-518 9 Manchester NH MNCHNHCO37Z  7421 AT&T - LOCAL 122      
603-519 A Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-519 0 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-11-18   
603-519 1 Exeter NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2019-10-26   
603-519 2 Exeter NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2021-06-10   
603-519 3 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-02-23   
603-519 4 Exeter NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2019-07-05   
603-519 5 Exeter NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-05-21   
603-519 6 Exeter NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-05-21   
603-519 7 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-11-05   
603-519 8 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-09-24   
603-519 9 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-520 A Laconia NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-521 A Nashua NH MNCHNHCOA02  7421 AT&T - LOCAL 122      
603-521 0 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2006-09-01   
603-521 1 Nashua NH MNCHNHCOA02  7421 AT&T - LOCAL 122      
603-521 2 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-02-02   
603-521 3 Nashua NH MNCHNHCOA02  7421 AT&T - LOCAL 122      
603-521 4 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-04-01   
603-521 5 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-04-01   
603-521 6 Nashua NH MNCHNHCO44Z  829J PAETEC ITEL, LLC 122   2006-04-29   
603-521 7 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-04-07   
603-521 8 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-04-07   
603-521 9 Nashua NH MNCHNHCOA02  7421 AT&T - LOCAL 122      
603-522 A Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 0 Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 1 Sanbornville NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2004-06-17   
603-522 2 Sanbornville NH MNCHNHCO23Z  073H TELNYX LLC 122   2024-07-21   
603-522 3 Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 4 Sanbornville NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   
603-522 5 Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 6 Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 7 Sanbornville NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-522 8 Sanbornville NH SBVLNHCSRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-522 9 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      
603-523 2 Canaan NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2007-01-30   
603-523 3 Canaan NH CANNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-523 4 Canaan NH CANNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-523 7 Canaan NH CANNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-523 8 Canaan NH CANNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-523 9 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      
603-525 3 Hancock NH HNCCNHSCRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-525 4 Hancock NH HNCCNHSCRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-525 6 Hancock NH   145J TERRA NOVA TELECOM INC. 122   2022-07-01   
603-525 7 Hancock NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-525 8 Hancock NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-30   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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