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: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-376 A Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
857-376 0 Brookline MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-08-29   
857-376 1 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2022-08-25   
857-376 2 Brookline MA SOVLMAAB6MD  939H COMMIO, LLC 128   2021-08-29   
857-376 3 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-376 4 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-376 5 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-376 6 Brookline MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-376 7 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-09-17   
857-376 8 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-08-13   
857-376 9 Brookline MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-08-13   

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

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