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: 504

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-504 A Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-504 0 Claremont NH PTMONH07DS1  9827 OTEL TELEKOM, INC. - NH 122   2005-01-14   
603-504 1 Claremont NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2004-04-06   
603-504 2 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2005-11-22   
603-504 3 Claremont NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2004-08-04   
603-504 4 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-06-14   
603-504 5 Claremont NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-08-07   
603-504 6 Claremont NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2006-10-30   
603-504 7 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-504 8 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-504 9 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122   2020-04-10   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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