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: 760

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-760 A Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
857-760 0 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2016-08-20   
857-760 1 Watertown MA BSTPMALLOMD  073H TELNYX LLC 128   2017-04-27   
857-760 2 Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2016-09-15   
857-760 3 Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2016-11-07   
857-760 4 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2017-05-10   
857-760 6 Watertown MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2018-10-30   
857-760 7 Watertown MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2019-03-19   
857-760 8 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-11   
857-760 9 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-11   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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