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: 734

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-734 A Epping NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-734 2 Epping NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2000-07-01   
603-734 4 Epping NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-11-30   
603-734 5 Epping NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-734 7 Epping NH   145J TERRA NOVA TELECOM INC. 122   2025-07-24   
603-734 9 Epping NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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