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.

Marion, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-854 A MARNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-854 0 GRFLMTMAHMD  073H TELNYX LLC 648      
406-854 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-854 2 MARNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-854 3 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-854 4 MARNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-854 5 MSSLMTMACMD  6529 T-MOBILE USA, INC. 648      
406-991 A GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 0 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 2 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 3 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 4 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 6   6529 T-MOBILE USA, INC. 648      
406-991 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.