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
603-743 9 Dover NH DOVRNHTHDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 A Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 0 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 1 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 2 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 3 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 5 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 6 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 8 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-744 9 Bristol NH BRSTNHSPRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 A North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 0 North Woodstock NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-745 1 North Woodstock NH   6386 BELL ATLANTIC MOBILE, INC 122   2026-03-22   
603-745 2 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 3 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 4 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 6 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 7 North Woodstock NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-745 8 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-745 9 North Woodstock NH NWDSNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-746 A Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 0 Contoocook NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-02-16   
603-746 1 Contoocook NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-746 2 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 3 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 4 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 5 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 6 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 8 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-746 9 Contoocook NH CNTCNHXAPS0  0047 MERRIMACK COUNTY TEL. CO. 122      
603-747 A Woodsville NH WDVLNHJLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-747 2 Woodsville NH WDVLNHJLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-747 3 Woodsville NH WDVLNHJLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-747 4 Woodsville NH WDVLNHJLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-747 8 Woodsville NH WDVLNHJLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-747 9 Woodsville NH   829J PAETEC ITEL, LLC 122   2002-07-15   
603-748 A Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 0 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 1 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 2 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 3 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 4 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 5 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-748 6 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2010-02-13   
603-748 7 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-08-01   
603-748 8 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2012-04-01   
603-748 9 Warner NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-749 A Dover NH DOVRNHTHDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-750 A Dover NH DOVRNHTHPS0  383J FIDIUM ENTERPRISE SERVICES, LLC 122      
603-750 0 Dover NH DOVRNHTHDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

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

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