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: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-299 A Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-299 0 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-01-05   
857-299 1 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2018-03-03   
857-299 2 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-23   
857-299 3 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-23   
857-299 4 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-03-07   
857-299 5 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-03-07   
857-299 6 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-03-07   
857-299 7 Belmont MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-03-07   
857-299 8 Belmont MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-01-05   
857-299 9 Belmont MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2024-12-06   

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

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