Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 836

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-836 A Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-836 0 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-03-29   
406-836 1 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-09-13   
406-836 2 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-10-15   
406-836 3 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-04-18   
406-836 4 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-08-20   
406-836 5 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-08-20   
406-836 6 Great Falls MT   453F ONVOY, LLC - MT 648   2024-04-28   
406-836 7 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-10-29   
406-836 8 Great Falls MT   453F ONVOY, LLC - MT 648   2024-04-28   
406-836 9 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2004-09-27   

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

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