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: 425

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-425 A Brighton MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128      
857-425 0 Brighton MA   197D VONAGE AMERICA LLC 128   2021-05-29   
857-425 1 Brighton MA   892D ONVOY, LLC - MA 128   2019-02-23   
857-425 2 Brighton MA   892D ONVOY, LLC - MA 128   2018-11-06   
857-425 3 Brighton MA   892D ONVOY, LLC - MA 128   2018-11-06   
857-425 4 Brighton MA   829J PAETEC ITEL, LLC 128   2018-08-28   
857-425 5 Brighton MA   624H ONVOY SPECTRUM, LLC 128   2021-04-05   
857-425 6 Brighton MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-10-21   
857-425 7 Brighton MA   515J IP HORIZON LLC 128   2017-07-02   
857-425 8 Brighton MA   892D ONVOY, LLC - MA 128   2019-02-23   
857-425 9 Brighton MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2016-11-07   

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

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