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: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-999 A Cambridge MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
857-999 0 Cambridge MA   197D VONAGE NETWORK INC. 128   2013-09-03   
857-999 1 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-999 2 Cambridge MA   318J COMCAST IP PHONE LLC 128   2013-04-29   
857-999 3 Cambridge MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2012-07-14   
857-999 4 Cambridge MA   989G VOXBEAM TELECOMMUNICATIONS INC. - MA 128   2014-09-15   
857-999 5 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-999 6 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-999 7 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-999 8 Cambridge MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-12-03   
857-999 9 Cambridge MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2012-07-14   

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

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