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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-816 A Winthrop MA CMBRMAMQDS0  4536 XO MASSACHUSETTS, INC. 128      
857-816 0 Winthrop MA   4536 XO MASSACHUSETTS, INC. 128      
857-816 1 Winthrop MA   4536 XO MASSACHUSETTS, INC. 128      
857-816 2 Winthrop MA   019F CBEYOND COMMUNICATIONS, LLC - MA 128   2010-03-15   
857-816 3 Winthrop MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-04   
857-816 4 Winthrop MA   4536 XO MASSACHUSETTS, INC. 128      
857-816 5 Winthrop MA   2899 BROADVIEW NETWORKS, INC. - MA 128   2005-07-01   
857-816 6 Winthrop MA   7135 TC SYSTEMS, INC. 128   2012-12-03   
857-816 7 Winthrop MA   892D ONVOY, LLC - MA 128   2014-09-18   
857-816 8 Winthrop MA   892D ONVOY, LLC - MA 128   2014-09-18   
857-816 9 Winthrop MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-05-17   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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