Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 228

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-228 A Watertown MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
857-228 0 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-27   
857-228 1 Watertown MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128   2001-09-24   
857-228 2 Watertown MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2013-03-19   
857-228 3 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2010-03-15   
857-228 4 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-21   
857-228 5 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-21   
857-228 6 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-228 7 Watertown MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   
857-228 8 Watertown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-01-02   
857-228 9 Watertown MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.