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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-663 A Dorchester MA   966C DSCI, LLC 128   2017-05-19   
857-663 0 Dorchester MA   892D ONVOY, LLC - MA 128   2017-06-09   
857-663 1 Dorchester MA   966G LOCAL ACCESS LLC - MA 128   2017-07-02   
857-663 2 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2017-09-05   
857-663 3 Dorchester MA   073H TELNYX LLC 128   2017-05-20   
857-663 4 Dorchester MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2017-09-05   
857-663 5 Dorchester MA   966C DSCI, LLC 128   2017-05-19   
857-663 6 Dorchester MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-01-04   
857-663 7 Dorchester MA   892D ONVOY, LLC - MA 128   2019-02-24   
857-663 8 Dorchester MA   892D ONVOY, LLC - MA 128   2019-02-24   
857-663 9 Dorchester MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2018-10-30   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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