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: 267

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-267 A Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
857-267 0 Milton MA NRTNMAAACM4  5562 METROPCS, INC. 128   2013-08-30   
857-267 1 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-267 2 Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2013-09-14   
857-267 3 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-06-15   
857-267 4 Milton MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-01-19   
857-267 5 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-09-13   
857-267 6 Milton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-02-23   
857-267 7 Milton MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-24   
857-267 8 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-12-30   
857-267 9 Milton MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2014-12-30   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.