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: 767

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-767 A Boston MA SOVLMAABCMD  516J TON80 COMMUNICATIONS, LLC 128      
857-767 0 Boston MA   892D ONVOY, LLC - MA 128   2022-11-03   
857-767 1 Boston MA   892D ONVOY, LLC - MA 128   2022-11-03   
857-767 2 Boston MA   892D ONVOY, LLC - MA 128   2022-06-09   
857-767 3 Boston MA   892D ONVOY, LLC - MA 128   2022-06-09   
857-767 4 Boston MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2022-08-01   
857-767 5 Boston MA   892D ONVOY, LLC - MA 128   2022-08-19   
857-767 6 Boston MA   892D ONVOY, LLC - MA 128   2022-08-19   
857-767 7 Boston MA   892D ONVOY, LLC - MA 128   2022-11-03   
857-767 8 Boston MA   516J TON80 COMMUNICATIONS, LLC 128   2022-03-12   
857-767 9 Boston MA   892D ONVOY, LLC - MA 128   2022-11-03   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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