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: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-263 A Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128      
857-263 0 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2011-09-05   
857-263 1 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2014-08-23   
857-263 2 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-02-07   
857-263 3 Boston MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-02-16   
857-263 4 Boston MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2011-09-11   
857-263 5 Boston MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2011-09-11   
857-263 6 Boston MA BSTPMALLDS1  4536 XO MASSACHUSETS, INC. 128   2011-09-11   
857-263 7 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2011-09-07   
857-263 8 Boston MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2011-09-07   
857-263 9 Boston MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2013-05-06   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.