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: 401 [Rate centres in NPA 401] [Dial plan for NPA 401]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-597 A Woonsocket RI WWWKRIDBDS0  8778 COX RHODE ISLAND TELECOM INC 130      
401-597 0 Woonsocket RI   8778 COX RHODE ISLAND TELECOM INC 130      
401-597 2 Woonsocket RI   6664 SPRINT SPECTRUM L.P. 130   2011-07-24   
401-597 5 Woonsocket RI   8778 COX RHODE ISLAND TELECOM INC 130   2005-09-20   
401-597 6 Woonsocket RI   8778 COX RHODE ISLAND TELECOM INC 130   2006-09-19   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.