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: 209

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-209 A Cambridge MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2021-01-05   
857-209 0 Cambridge MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-10-06   
857-209 1 Cambridge MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2009-11-11   
857-209 2 Cambridge MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2010-07-18   
857-209 3 Cambridge MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2010-08-29   
857-209 4 Cambridge MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-09-25   
857-209 5 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
857-209 6 Cambridge MA   6664 SPRINT SPECTRUM L.P. 128   2009-12-13   
857-209 7 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2020-05-08   
857-209 8 Cambridge MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-03-19   
857-209 9 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-10-07   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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