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: 751

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-751 A Pelham NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-751 0 Pelham NH   829J PAETEC ITEL, LLC 122   2001-04-15   
603-751 1 Pelham NH   145J TERRA NOVA TELECOM INC. 122   2023-06-22   
603-751 2 Pelham NH   6386 BELL ATLANTIC MOBILE, INC 122   2023-09-06   
603-751 3 Pelham NH   7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2016-01-24   
603-751 4 Pelham NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-02-07   
603-751 5 Pelham NH   829J PAETEC ITEL, LLC 122   2002-10-14   
603-751 6 Pelham NH   073H TELNYX LLC 122   2023-09-08   
603-751 7 Pelham NH   318J COMCAST IP PHONE, LLC 122   2021-09-15   
603-751 8 Pelham NH   318J COMCAST IP PHONE, LLC 122   2012-05-20   
603-751 9 Pelham NH   318J COMCAST IP PHONE, LLC 122   2021-09-24   

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

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