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: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-728 A North Woodstock NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-728 0 North Woodstock NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2005-01-24   
603-728 1 North Woodstock NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-728 2 North Woodstock NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-728 3 North Woodstock NH   829J PAETEC ITEL, LLC 122   2006-02-24   
603-728 4 North Woodstock NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-728 5 North Woodstock NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-09-01   
603-728 7 North Woodstock NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-04-04   
603-728 8 North Woodstock NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-09-20   
603-728 9 North Woodstock NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2008-11-03   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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