Local Calling Guide

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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
603-441 8 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-07-01   
603-441 9 Rochester NH MNCHNHAC3MD  939H COMMIO, LLC 122   2021-11-15   
603-442 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 1 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 2 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 3 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 4 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2001-02-28   
603-442 5 Lebanon NH   829J PAETEC ITEL, LLC 122   2004-04-16   
603-442 6 Lebanon NH   829J PAETEC ITEL, LLC 122   2004-10-10   
603-442 7 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 8 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-442 9 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 0 Lebanon NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-443 1 Lebanon NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-443 2 Lebanon NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-443 3 Lebanon NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-443 4 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 5 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 6 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 7 Lebanon NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-443 8 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 9 Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-444 A Littleton NH LTTNNHPLDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 A North Walpole NH BLFLVTHERS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 0 North Walpole NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2008-08-15   
603-445 2 North Walpole NH BLFLVTHERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 4 North Walpole NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-445 5 North Walpole NH BLFLVTHERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 6 North Walpole NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-445 7 North Walpole NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-31   
603-446 A Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 0 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 1 Marlow NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2005-05-15   
603-446 2 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 3 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 5 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 6 Marlow NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-446 7 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 8 Marlow NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2017-10-06   
603-446 9 Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 A Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 0 Conway NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-10   
603-447 1 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 2 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 3 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 4 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 5 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 6 Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 7 Conway NH   145J TERRA NOVA TELECOM INC. 122   2023-01-04   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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