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: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-237 A Warren RI PRVDRIUFDS1  7351 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 130      
401-237 0 Warren RI EPRVRINB9MD  003F BANDWIDTH.COM CLEC, LLC - RI 130   2008-11-27   
401-237 1 Warren RI   829J PAETEC ITEL, LLC 130   2004-09-18   
401-237 2 Warren RI EPRVRINB9MD  003F BANDWIDTH.COM CLEC, LLC - RI 130   2011-10-10   
401-237 3 Warren RI PRVDRINW4MD  4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130   2005-03-17   
401-237 4 Warren RI PRVDRINW4MD  4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130   2003-08-20   
401-237 6 Warren RI PRVDRINW4MD  4016 LEVEL 3 COMMUNICATIONS, LLC - RI 130   2005-03-17   
401-237 7 Warren RI EPRVRINB9MD  003F BANDWIDTH.COM CLEC, LLC - RI 130   2015-05-28   
401-237 8 Warren RI   829J PAETEC ITEL, LLC 130   2004-04-19   
401-237 9 Warren RI PRVDRIUFDS1  7351 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 130      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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