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: 725

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-725 A Tamworth NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-725 0 Tamworth NH MNCHNHAC3MD  939H COMMIO, LLC 122   2022-11-05   
603-725 4 Tamworth NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-725 6 Tamworth NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2023-03-03   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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