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: 252

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-252 A Warren RI EPRVRIELCM2  5562 METROPCS, INC. 130      
401-252 0 Warren RI EPRVRINBDS2  631G PEERLESS NETWORK OF RHODE ISLAND, LLC - RI 130   2018-12-17   
401-252 1 Warren RI EPRVRIELCM2  5562 METROPCS, INC. 130      
401-252 2 Warren RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2020-07-11   
401-252 4 Warren RI PRVDRIWAHMD  318J COMCAST IP PHONE, LLC 130   2018-03-10   
401-252 5 Warren RI PRVDRIWAXJY  977E ONVOY, LLC - RI 130   2020-07-11   
401-252 6 Warren RI EPRVRIELCM2  5562 METROPCS, INC. 130      
401-252 7 Warren RI PRVDRIWA0MD  508J CENTURYLINK COMMUNICATIONS, LLC 130   2015-12-12   
401-252 8 Warren RI PRVDRIWA3MD  073H TELNYX LLC 130   2021-05-29   
401-252 9 Warren RI EPRVRIELCM2  5562 METROPCS, INC. 130      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.