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: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-604 A Westerly RI   829J PAETEC ITEL, LLC 130      
401-604 0 Westerly RI   829J PAETEC ITEL, LLC 130      
401-604 1 Westerly RI   829J PAETEC ITEL, LLC 130      
401-604 2 Westerly RI   829J PAETEC ITEL, LLC 130      
401-604 8 Westerly RI   977E ONVOY, LLC - RI 130   2019-05-11   
401-604 9 Westerly RI   829J PAETEC ITEL, LLC 130      

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

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