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: 549

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-549 A Providence RI   977E ONVOY, LLC - RI 130   2026-11-08   
401-549 0 Providence RI   977E ONVOY, LLC - RI 130   2026-11-08   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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