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: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-547 A Centredale RI   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 130   2026-04-28   
401-547 7 Centredale RI   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 130   2026-04-28   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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