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: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-410 A Concord NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-410 0 Concord NH   145J TERRA NOVA TELECOM INC. 122   2025-08-31   
603-410 1 Concord NH   829J PAETEC ITEL, LLC 122   2001-09-24   
603-410 2 Concord NH   829J PAETEC ITEL, LLC 122   2004-09-10   
603-410 3 Concord NH   829J PAETEC ITEL, LLC 122   2005-05-02   
603-410 4 Concord NH   829J PAETEC ITEL, LLC 122   2006-04-20   
603-410 5 Concord NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2006-06-22   
603-410 6 Concord NH   829J PAETEC ITEL, LLC 122      
603-410 7 Concord NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2007-07-09   
603-410 8 Concord NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2012-12-12   
603-410 9 Concord NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2006-10-09   

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

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