Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-475 A Chelsea MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-475 0 Chelsea MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-475 1 Chelsea MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-475 3 Chelsea MA   624H ONVOY SPECTRUM, LLC 128      
857-475 4 Chelsea MA   624H ONVOY SPECTRUM, LLC 128      
857-475 5 Chelsea MA   624H ONVOY SPECTRUM, LLC 128      
857-475 7 Chelsea MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-475 8 Chelsea MA   892D ONVOY, LLC - MA 128      
857-475 9 Chelsea MA   892D ONVOY, LLC - MA 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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