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
603-267 A Belmont NH BLMTNHMARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-267 0 Belmont NH   4017 LEVEL 3 COMMUNICATIONS - NH 122   2004-09-03   
603-267 1 Belmont NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-267 2 Belmont NH   4112 COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH 122   2009-06-30   
603-267 3 Belmont NH   2698 CTC COMMUNICATIONS CORP. - NH 122   2003-03-11   
603-267 4 Belmont NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2002-09-10   
603-267 5 Belmont NH   314C IDT AMERICA CORP - NH 122   2008-04-18   
603-267 6 Belmont NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-267 7 Belmont NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-267 8 Belmont NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-267 9 Belmont NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.