Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 394

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-394 A South Hampton NH EXTRNHCEDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-394 0 South Hampton NH EXTRNHCEDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-394 1 South Hampton NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122   2005-02-28   
603-394 2 South Hampton NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2002-08-05   
603-394 3 South Hampton NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-05-04   
603-394 4 South Hampton NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   
603-394 5 South Hampton NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2005-06-24   
603-394 6 South Hampton NH MNCHNHCOCM1  5562 METROPCS, INC. 122   2006-02-19   
603-394 7 South Hampton NH EXTRNHCEDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.