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: 813

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-813 A Belgrade MT BLNGMTWEAMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650      
406-813 0 Belgrade MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-03-21   
406-813 1 Belgrade MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2012-09-09   
406-813 2 Belgrade MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2021-06-12   
406-813 3 Belgrade MT BLNGMTWEAMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650   2011-11-01   
406-813 4 Belgrade MT BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-10   
406-813 5 Belgrade MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-813 6 Belgrade MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-813 7 Belgrade MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-813 8 Belgrade MT BZMNMTEFPS0  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 650   2012-03-13   
406-813 9 Belgrade MT BLNGMT933MD  073H TELNYX LLC 650   2017-03-31   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.