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: 845

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-845 A Derry NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2025-04-30   
603-845 0 Derry NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-845 1 Derry NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122   2004-12-14   
603-845 2 Derry NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-845 3 Derry NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2005-06-23   
603-845 4 Derry NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122      
603-845 5 Derry NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2005-01-14   
603-845 6 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-01-02   
603-845 7 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-04-24   
603-845 8 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-02-02   
603-845 9 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2007-06-01   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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