Local Calling Guide

Area code/prefix search

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NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-816 3 Winthrop MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
857-816 4 Winthrop MA   4536 XO MASSACHUSETTS, INC. 128      
857-816 5 Winthrop MA   2899 BROADVIEW NETWORKS, INC. - MA 128   2005-07-01   
857-816 6 Winthrop MA   7135 TC SYSTEMS, INC. 128   2012-12-03   
857-816 7 Winthrop MA   892D ONVOY, LLC - MA 128   2014-09-18   
857-816 8 Winthrop MA   892D ONVOY, LLC - MA 128   2014-09-18   
857-816 9 Winthrop MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-17   
857-829 A Cambridge MA   6664 SPRINT SPECTRUM L.P. 128      
857-829 0 Cambridge MA   6664 SPRINT SPECTRUM L.P. 128      
857-829 1 Cambridge MA   6664 SPRINT SPECTRUM L.P. 128      
857-829 2 Cambridge MA   6664 SPRINT SPECTRUM L.P. 128      
857-829 3 Cambridge MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2013-11-23   
857-829 4 Cambridge MA   892D ONVOY, LLC - MA 128   2014-10-07   
857-829 5 Cambridge MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2010-07-30   
857-829 6 Cambridge MA   892D ONVOY, LLC - MA 128   2014-10-07   
857-829 7 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2013-12-03   
857-829 8 Cambridge MA   6664 SPRINT SPECTRUM L.P. 128      
857-829 9 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2013-12-03   
857-837 A Charlestown MA   892D ONVOY, LLC - MA 128   2020-07-26   
857-837 1 Charlestown MA   892D ONVOY, LLC - MA 128   2020-07-26   
857-837 2 Charlestown MA   892D ONVOY, LLC - MA 128   2020-07-26   
857-837 3 Charlestown MA   892D ONVOY, LLC - MA 128   2020-07-26   
857-856 A Cambridge MA   892D ONVOY, LLC - MA 128      
857-856 0 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2018-11-17   
857-856 1 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2018-11-17   
857-856 2 Cambridge MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-02-04   
857-856 3 Cambridge MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-02-04   
857-856 4 Cambridge MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2016-02-04   
857-856 5 Cambridge MA   892D ONVOY, LLC - MA 128   2015-05-09   
857-856 6 Cambridge MA   892D ONVOY, LLC - MA 128   2015-05-09   
857-856 7 Cambridge MA   892D ONVOY, LLC - MA 128   2015-05-09   
857-856 8 Cambridge MA   892D ONVOY, LLC - MA 128   2015-05-09   
857-856 9 Cambridge MA   966G LOCAL ACCESS LLC - MA 128   2019-04-26   
857-858 A Newton MA   892D ONVOY, LLC - MA 128   2020-07-12   
857-858 1 Newton MA   892D ONVOY, LLC - MA 128   2020-07-12   
857-858 2 Newton MA   892D ONVOY, LLC - MA 128   2020-07-12   
857-858 3 Newton MA   892D ONVOY, LLC - MA 128   2020-07-12   
857-869 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-13   
857-869 0 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 1 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 2 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 3 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 4 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 5 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 6 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-14   
857-869 7 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-13   
857-869 8 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-13   
857-869 9 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2007-09-13   
857-877 A Brighton MA   892D ONVOY, LLC - MA 128   2020-07-12   
857-877 1 Brighton MA   892D ONVOY, LLC - MA 128   2020-07-12   

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Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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