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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
603-443 3 Lebanon NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-443 4 Lebanon NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 5 Lebanon NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 6 Lebanon NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 7 Lebanon NH   6386 BELL ATLANTIC MOBILE, INC 122      
603-443 8 Lebanon NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 9 Lebanon NH   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   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2008-08-15   
603-445 2 North Walpole NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 4 North Walpole NH   9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-445 5 North Walpole NH   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   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   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 1 Marlow NH   9827 OTEL TELEKOM, INC. - NH 122   2005-05-15   
603-446 2 Marlow NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 3 Marlow NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 5 Marlow NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 6 Marlow NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-446 7 Marlow NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 8 Marlow NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2017-10-06   
603-446 9 Marlow NH   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   9827 OTEL TELEKOM, INC. - NH 122   2002-09-10   
603-447 1 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 2 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 3 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 4 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 5 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 6 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 7 Conway NH   145J TERRA NOVA TELECOM INC. 122   2023-01-04   
603-447 8 Conway NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 9 Conway NH   5562 METROPCS, INC. 122   2005-07-04   
603-448 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 A Milan NH MILNNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 2 Milan NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 3 Milan NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 4 Milan NH   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   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   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-06-05   
603-450 1 Concord NH   197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 2 Concord NH   197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 3 Concord NH   197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 4 Concord NH   197D VONAGE AMERICA LLC 122   2018-12-06   
603-450 5 Concord NH   197D VONAGE AMERICA LLC 122   2018-12-06   

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

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