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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-366 A Laconia NH WERSNHSTRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-366 0 Laconia NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-01-21   
603-366 1 Laconia NH   4206 PAETEC COMMUNICATIONS, INC. - NH 122   2006-04-03   
603-366 2 Laconia NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-366 3 Laconia NH   4206 PAETEC COMMUNICATIONS, INC. - NH 122   2013-03-05   
603-366 4 Laconia NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-366 5 Laconia NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-366 6 Laconia NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2009-01-05   
603-366 7 Laconia NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-366 8 Laconia NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2012-10-23   
603-366 9 Laconia NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.