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: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-439 A Keene NH MNCHNHCO44Z  829J PAETEC ITEL, LLC 122   2025-04-30   
603-439 0 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2011-08-29   
603-439 1 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2013-04-27   
603-439 2 Keene NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2005-01-27   
603-439 3 Keene NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2003-07-28   
603-439 4 Keene NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2003-07-28   
603-439 6 Keene NH MNCHNHCO44Z  829J PAETEC ITEL, LLC 122      
603-439 7 Keene NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-04-01   
603-439 8 Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-02-15   
603-439 9 Keene NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-11-25   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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