Local Calling Guide

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

NXX: 367

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-367 A Madison NH MDSNNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-367 0 Madison NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2002-09-19   
603-367 1 Madison NH   145J TERRA NOVA TELECOM INC. 122   2023-01-04   
603-367 2 Madison NH   829J PAETEC ITEL, LLC 122   2008-03-05   
603-367 3 Madison NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-367 4 Madison NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-367 7 Madison NH   793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-367 8 Madison NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-367 9 Madison NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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