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
857-264 A Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2010-11-20   
857-264 0 Boston MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-14   
857-264 1 Boston MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-14   
857-264 2 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-264 3 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2010-11-23   
857-264 4 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2011-01-06   
857-264 5 Boston MA   892D ONVOY, LLC - MA 128   2011-03-13   
857-264 6 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2012-08-16   
857-264 7 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2010-12-03   
857-264 8 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2011-07-26   
857-264 9 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2011-07-26   

Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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