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: 956

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-956 A Portsmouth NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122      
603-956 0 Portsmouth NH MNCHNHAC3MD  939H COMMIO, LLC 122      
603-956 1 Portsmouth NH MNCHNHCO23Z  073H TELNYX LLC 122      
603-956 2 Portsmouth NH MNCHNHCO18Z  197D VONAGE AMERICA LLC 122      
603-956 3 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-956 4 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-956 5 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-956 6 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-956 7 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-956 8 Portsmouth NH   8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-956 9 Portsmouth NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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