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: 924

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-924 A Belgrade MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-924 0 Belgrade MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-924 1 Belgrade MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-924 2 Belgrade MT   792K CHARTER IP ENABLED SERVICES, LLC 650      
406-924 3 Belgrade MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650      
406-924 4 Belgrade MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-924 5 Belgrade MT BLGRMTMADS0  9636 QWEST CORPORATION 650      
406-924 6 Belgrade MT   792K CHARTER IP ENABLED SERVICES, LLC 650      
406-924 7 Belgrade MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-924 8 Belgrade MT BZMNMTHZDS0  746D MONTANA OPTICOM, LLC - MT 650      
406-924 9 Belgrade MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.