Local Calling Guide

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

NXX: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-372 A Claremont NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 0 Claremont NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 1 Claremont NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 2 Claremont NH   6386 BELL ATLANTIC MOBILE, INC 122   2007-05-03   
603-372 4 Claremont NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 5 Claremont NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-372 6 Claremont NH   6386 BELL ATLANTIC MOBILE, INC 122   2008-11-03   
603-372 7 Claremont NH   6386 BELL ATLANTIC MOBILE, INC 122   2008-05-02   
603-372 9 Claremont NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122      

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

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