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: 712

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-712 A Pike NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-712 0 Pike NH   145J TERRA NOVA TELECOM INC. 122   2023-08-06   
603-712 1 Pike NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-11-11   
603-712 5 Pike NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-712 9 Pike NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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