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: 317

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-317 A Milan NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-317 1 Milan NH MNCHNHCOXPZ  853C TIME WARNER CABLE INFORMATION SVCS (NEW HAMPSHIRE) 122   2024-01-01   
603-317 3 Milan NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2023-11-11   
603-317 4 Milan NH PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-317 5 Milan NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-317 9 Milan NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

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

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