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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-921 A Warwick RI PRVDRIWAHMD  318J COMCAST IP PHONE, LLC 130      
401-921 0 Warwick RI   318J COMCAST IP PHONE, LLC 130      
401-921 1 Warwick RI   318J COMCAST IP PHONE, LLC 130      
401-921 2 Warwick RI   318J COMCAST IP PHONE, LLC 130   2003-05-09   
401-921 3 Warwick RI   318J COMCAST IP PHONE, LLC 130   2004-07-23   
401-921 4 Warwick RI   318J COMCAST IP PHONE, LLC 130   2005-05-11   
401-921 5 Warwick RI   318J COMCAST IP PHONE, LLC 130   2005-11-11   
401-921 6 Warwick RI   318J COMCAST IP PHONE, LLC 130   2006-09-06   
401-921 7 Warwick RI   318J COMCAST IP PHONE, LLC 130   2011-02-25   
401-921 8 Warwick RI   318J COMCAST IP PHONE, LLC 130   2012-03-28   
401-921 9 Warwick RI   318J COMCAST IP PHONE, LLC 130   2016-11-21   

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

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