Local Calling Guide

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

NXX: 453

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-453 A Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-453 0 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2005-08-01   
857-453 1 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 2 Boston MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2008-01-08   
857-453 3 Boston MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2008-03-14   
857-453 4 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-15   
857-453 5 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2008-04-16   
857-453 6 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 7 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 8 Boston MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 9 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 128   2005-08-01   

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

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