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: 758

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-758 A Boston MA SOVLMAABAMD  965H FRACTEL, LLC 128      
857-758 0 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-10-06   
857-758 1 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-11-03   
857-758 2 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 3 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 4 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 5 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 6 Boston MA SOVLMAABAMD  965H FRACTEL, LLC 128   2021-06-28   
857-758 7 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 8 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-18   
857-758 9 Boston MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2022-11-03   

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

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