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 CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-453 0 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-08-01   
857-453 1 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 2 Boston MA   829J PAETEC ITEL, LLC 128   2008-01-08   
857-453 3 Boston MA   829J PAETEC ITEL, LLC 128   2008-03-14   
857-453 4 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-15   
857-453 5 Boston MA   829J PAETEC ITEL, LLC 128   2008-04-16   
857-453 6 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 7 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 8 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-07-10   
857-453 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-08-01   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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