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.

Bigfork, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-420 A   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-420 0 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-420 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 2   792K CHARTER IP ENABLED SERVICES, LLC 648      
406-420 3 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 4 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 5 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-420 9 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 A GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 0 GRFLMTMAHMD  073H TELNYX LLC 648      
406-614 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 2 PLSNMTPC1MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648      
406-614 3 MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648      
406-614 4 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 5 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-614 7 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-614 8 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-614 9 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-837 A BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 0 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 1 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 2 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 3 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 4 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 5 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 6 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 7 BGFKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-837 8 HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648      
406-837 9 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.