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: 676

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-676 A Hanover NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 0 Hanover NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 1 Hanover NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 2 Hanover NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 3 Hanover NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 4 Hanover NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-676 5 Hanover NH   7421 AT&T - LOCAL 122   2006-09-30   
603-676 6 Hanover NH   829J PAETEC ITEL, LLC 122   2005-11-01   
603-676 7 Hanover NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-676 8 Hanover NH   829J PAETEC ITEL, LLC 122   2005-05-01   
603-676 9 Hanover NH   145J TERRA NOVA TELECOM INC. 122   2025-09-16   

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

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