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: 904

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-904 A Walpole NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122      
603-904 0 Walpole NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2005-10-13   
603-904 3 Walpole NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2019-02-18   
603-904 4 Walpole NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-31   

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

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