Local Calling Guide

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 613

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-613 A Colebrook NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-613 1 Colebrook NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-10-11   
603-613 3 Colebrook NH   145J TERRA NOVA TELECOM INC. 122   2023-11-11   
603-613 4 Colebrook NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-10   
603-613 9 Colebrook NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

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

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