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: 974

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-974 A Plaistow NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-974 0 Plaistow NH   829J PAETEC ITEL, LLC 122   2000-05-29   
603-974 1 Plaistow NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-974 2 Plaistow NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-974 3 Plaistow NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2012-05-05   
603-974 5 Plaistow NH   145J TERRA NOVA TELECOM INC. 122   2023-11-11   
603-974 7 Plaistow NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-07-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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