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: 575

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-575 A Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-575 0 Somerville MA BSTPMALLOMD  073H TELNYX LLC 128   2021-06-04   
857-575 1 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-575 2 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-575 3 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-13   
857-575 4 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-13   
857-575 5 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-13   
857-575 6 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-13   
857-575 7 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-03   
857-575 8 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-575 9 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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