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: 472

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-472 A Portsmouth RI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 130      
401-472 2 Portsmouth RI   321J HD CARRIER LLC 130   2020-05-28   
401-472 3 Portsmouth RI   321J HD CARRIER LLC 130   2020-05-28   
401-472 4 Portsmouth RI   003F BANDWIDTH.COM CLEC, LLC - RI 130   2002-06-16   
401-472 6 Portsmouth RI   516J TON80 COMMUNICATIONS, LLC 130   2021-10-01   
401-472 8 Portsmouth RI   829J PAETEC ITEL, LLC 130   2004-04-19   
401-472 9 Portsmouth RI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 130      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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