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: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 887

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-887 A Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 1 Finley Point MT CHRLMT010MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2016-04-23   
406-887 2 Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 3 Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 4 Finley Point MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2023-12-16   
406-887 5 Finley Point MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-887 6 Finley Point MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-887 7 Finley Point MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-887 8 Finley Point MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.