Local Calling Guide

Area code/prefix search

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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 0 Milan NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2024-08-07   
603-317 1 Milan NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2024-01-01   
603-317 3 Milan NH   145J TERRA NOVA TELECOM INC. 122   2023-11-11   
603-317 4 Milan NH PTMONH073MD  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: Sun, 26 Jan 2025 15:59:20 UTC

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