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: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-303 A Warren RI   624H ONVOY SPECTRUM, LLC 130      
401-303 3 Warren RI   145J TERRA NOVA TELECOM INC. 130   2020-11-14   
401-303 4 Warren RI   506J TWILIO INTERNATIONAL INC 130   2020-12-21   
401-303 5 Warren RI   624H ONVOY SPECTRUM, LLC 130   2021-12-09   
401-303 6 Warren RI   624H ONVOY SPECTRUM, LLC 130   2021-12-09   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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