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: 758

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-758 A Hampton NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-758 0 Hampton NH   9827 OTEL TELEKOM, INC. - NH 122   2005-01-14   
603-758 1 Hampton NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2001-02-06   
603-758 3 Hampton NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2013-08-30   
603-758 4 Hampton NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2002-09-19   
603-758 5 Hampton NH   829J PAETEC ITEL, LLC 122   2009-12-11   
603-758 6 Hampton NH   829J PAETEC ITEL, LLC 122      
603-758 7 Hampton NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2010-08-19   
603-758 8 Hampton NH   6386 BELL ATLANTIC MOBILE, INC 122   2023-07-28   
603-758 9 Hampton NH   829J PAETEC ITEL, LLC 122   2001-03-26   

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

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