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: 833

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-833 A Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-833 0 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-12-03   
603-833 1 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-02-03   
603-833 2 Rochester NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2007-07-23   
603-833 3 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-01-02   
603-833 4 Rochester NH   6386 BELL ATLANTIC MOBILE, INC 122   2026-08-20   
603-833 5 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-11-15   
603-833 6 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-07-03   
603-833 7 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2009-04-02   
603-833 8 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2009-10-02   
603-833 9 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2010-02-13   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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