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: 663

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-663 A Dorchester MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      
857-663 0 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2017-06-09   
857-663 1 Dorchester MA   515J IP HORIZON LLC 128   2017-07-02   
857-663 2 Dorchester MA CMBSMA01GT4  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2017-09-05   
857-663 3 Dorchester MA BSTPMALLOMD  073H TELNYX LLC 128   2017-05-20   
857-663 4 Dorchester MA   145J TERRA NOVA TELECOM INC. 128   2022-05-12   
857-663 6 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2019-01-04   
857-663 7 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-24   
857-663 8 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-24   
857-663 9 Dorchester MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2018-10-30   

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

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