Local Calling Guide

Area code/prefix search

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 867

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-867 A Brookline MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128      
857-867 0 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-07-23   
857-867 1 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-07-23   
857-867 2 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-07-23   
857-867 3 Brookline MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-22   
857-867 4 Brookline MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-22   
857-867 5 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-12-08   
857-867 6 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2023-12-08   
857-867 7 Brookline MA SOVLMAAB3MD  197D VONAGE AMERICA LLC 128   2021-10-22   
857-867 8 Brookline MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-05-17   
857-867 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-07-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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