Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 903

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-903 A Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-903 0 Keene NH   793K TWC IP ENABLED SERVICES, LLC 122   2005-06-24   
603-903 1 Keene NH   637E ONVOY, LLC - NH 122   2008-04-10   
603-903 2 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2008-08-01   
603-903 3 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2007-11-29   
603-903 4 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2008-08-01   
603-903 5 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2009-04-02   
603-903 6 Keene NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2010-01-08   
603-903 7 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2010-08-01   
603-903 8 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2011-09-02   
603-903 9 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2011-03-04   

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

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