Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 401 [Rate centres in NPA 401] [Dial plan for NPA 401]

NXX: 356

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-356 A Woonsocket RI PRVDRIWAHMD  318J COMCAST IP PHONE, LLC 130      
401-356 0 Woonsocket RI   318J COMCAST IP PHONE, LLC 130      
401-356 1 Woonsocket RI   318J COMCAST IP PHONE, LLC 130      
401-356 3 Woonsocket RI   977E ONVOY, LLC - RI 130   2016-01-22   
401-356 4 Woonsocket RI   318J COMCAST IP PHONE, LLC 130      
401-356 5 Woonsocket RI   318J COMCAST IP PHONE, LLC 130   2017-08-18   
401-356 6 Woonsocket RI   073H TELNYX LLC 130   2017-04-20   
401-356 8 Woonsocket RI   631G PEERLESS NETWORK OF RHODE ISLAND, LLC - RI 130   2015-10-22   
401-356 9 Woonsocket RI   977E ONVOY, LLC - RI 130   2025-10-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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