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: 313

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-313 A Coventry RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130      
401-313 0 Coventry RI EPRVRINB1MD  939H COMMIO, LLC 130   2021-07-08   
401-313 1 Coventry RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2022-11-24   
401-313 3 Coventry RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2016-03-21   
401-313 4 Coventry RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2016-03-21   
401-313 5 Coventry RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2022-12-02   
401-313 7 Coventry RI PRVDRIWA0MD  508J CENTURYLINK COMMUNICATIONS, LLC 130   2015-12-12   
401-313 8 Coventry RI EPRVRINB1MD  939H COMMIO, LLC 130   2021-07-08   
401-313 9 Coventry RI EPRVRINB1MD  939H COMMIO, LLC 130   2021-07-08   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.