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: 297

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-297 A Newton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-297 0 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-11   
857-297 1 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-07-01   
857-297 2 Newton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2017-10-09   
857-297 3 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-297 4 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2021-08-14   
857-297 5 Newton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-27   
857-297 6 Newton MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-02-27   
857-297 7 Newton MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-05-02   
857-297 8 Newton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-07-01   
857-297 9 Newton MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2020-03-18   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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