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: 597

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-597 A Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-597 0 Winthrop MA BSTPMALLOMD  073H TELNYX LLC 128   2021-06-04   
857-597 1 Winthrop MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-597 2 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-597 3 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-597 5 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-06-03   
857-597 6 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-11-19   
857-597 7 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-597 8 Winthrop MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-07-10   
857-597 9 Winthrop MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-11-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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