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: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-388 A Westerly RI PRVDRIUFDS1  7351 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 130      
401-388 0 Westerly RI   003F BANDWIDTH.COM CLEC, LLC - RI 130   2008-11-27   
401-388 1 Westerly RI   829J PAETEC ITEL, LLC 130   2004-04-19   
401-388 2 Westerly RI   977E ONVOY, LLC - RI 130   2021-03-02   
401-388 3 Westerly RI   977E ONVOY, LLC - RI 130   2021-03-02   
401-388 4 Westerly RI   977E ONVOY, LLC - RI 130   2016-03-21   
401-388 5 Westerly RI   977E ONVOY, LLC - RI 130   2016-03-21   
401-388 6 Westerly RI   977E ONVOY, LLC - RI 130   2021-03-02   
401-388 7 Westerly RI   508J CENTURYLINK COMMUNICATIONS, LLC 130   2015-12-12   
401-388 8 Westerly RI   318J COMCAST IP PHONE, LLC 130   2018-03-10   
401-388 9 Westerly RI   7351 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 130      

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

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