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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-440 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 0 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2017-08-22   
603-440 1 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2016-12-13   
603-440 2 Merrimack NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 3 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2003-08-03   
603-440 4 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2012-06-19   
603-440 5 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2004-02-17   
603-440 6 Merrimack NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 7 Merrimack NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-440 8 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2002-12-09   
603-440 9 Merrimack NH   6386 BELL ATLANTIC NYNEX MOBILE 122   2004-08-02   

Last updated: Sun, 31 May 2020 11:59:01 UTC

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