Local Calling Guide

Area code/prefix search

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

NXX: 730

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-730 A North Conway NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-730 0 North Conway NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2001-06-06   
603-730 1 North Conway NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2002-12-04   
603-730 2 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2010-08-01   
603-730 3 North Conway NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-23   
603-730 4 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2012-10-01   
603-730 5 North Conway NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-730 6 North Conway NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-08-20   
603-730 7 North Conway NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-12-17   
603-730 8 North Conway NH MNCHNHAC3MD  939H COMMIO, LLC 122   2022-11-05   
603-730 9 North Conway NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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