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: 924

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-924 A Portsmouth RI PRVDRIWAWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 0 Portsmouth RI   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 1 Portsmouth RI   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 2 Portsmouth RI   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 3 Portsmouth RI   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 4 Portsmouth RI   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 130      
401-924 7 Portsmouth RI   977E ONVOY, LLC - RI 130   2018-02-10   
401-924 9 Portsmouth RI   631G PEERLESS NETWORK OF RHODE ISLAND, LLC - RI 130   2021-02-28   

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

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