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: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-285 A Cambridge MA WSBOMAGOAMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-285 0 Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-06-30   
857-285 1 Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-06-30   
857-285 2 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-05   
857-285 3 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-05   
857-285 4 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-05   
857-285 5 Cambridge MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-05   
857-285 6 Cambridge MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-08-15   
857-285 7 Cambridge MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2020-02-07   
857-285 8 Cambridge MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-285 9 Cambridge MA WSBOMAGOAMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2012-10-15   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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