Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-412 4 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-412 5 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-412 6 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-412 7 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-412 8 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-412 9 Billings MT 453F ONVOY, LLC - MT 650   2017-06-21   
406-414 0 Bozeman MT 453F ONVOY, LLC - MT 650   2015-12-10   
406-416 A Forsyth MT 453F ONVOY, LLC - MT 650      
406-416 0 Forsyth MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-416 2 Forsyth MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-416 4 Forsyth MT 453F ONVOY, LLC - MT 650   2020-08-08   
406-416 5 Forsyth MT 453F ONVOY, LLC - MT 650   2020-08-08   
406-416 6 Forsyth MT 453F ONVOY, LLC - MT 650   2020-11-10   
406-416 7 Forsyth MT 453F ONVOY, LLC - MT 650   2020-11-10   
406-418 A Cooke City MT 453F ONVOY, LLC - MT 650      
406-418 1 Cooke City MT 453F ONVOY, LLC - MT 650   2020-01-05   
406-418 2 Cooke City MT 453F ONVOY, LLC - MT 650   2020-01-05   
406-418 3 Cooke City MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-418 4 Cooke City MT 453F ONVOY, LLC - MT 650   2019-10-20   
406-418 6 Cooke City MT 453F ONVOY, LLC - MT 650   2019-10-20   
406-418 7 Cooke City MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-418 8 Cooke City MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-426 5 Red Lodge MT 453F ONVOY, LLC - MT 650   2012-12-17   
406-445 5 Red Lodge MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-445 7 Red Lodge MT 453F ONVOY, LLC - MT 650   2007-03-19   
406-446 6 Red Lodge MT 453F ONVOY, LLC - MT 650   2019-09-15   
406-446 7 Red Lodge MT 453F ONVOY, LLC - MT 650   2011-10-24   
406-446 8 Red Lodge MT 453F ONVOY, LLC - MT 650   2019-10-28   
406-451 0 Bozeman MT 453F ONVOY, LLC - MT 650   2017-11-17   
406-451 7 Bozeman MT 453F ONVOY, LLC - MT 650   2012-04-20   
406-500 2 Billings MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-500 4 Billings MT 453F ONVOY, LLC - MT 650   2019-10-28   
406-500 5 Billings MT 453F ONVOY, LLC - MT 650   2019-10-28   
406-500 6 Billings MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-500 7 Billings MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-500 8 Billings MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-500 9 Billings MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-503 0 Billings MT 453F ONVOY, LLC - MT 650   2023-08-20   
406-503 3 Billings MT 453F ONVOY, LLC - MT 650   2024-02-09   
406-503 5 Billings MT 453F ONVOY, LLC - MT 650   2024-02-09   
406-503 6 Billings MT 453F ONVOY, LLC - MT 650   2024-02-09   
406-503 7 Billings MT 453F ONVOY, LLC - MT 650   2024-02-09   
406-503 8 Billings MT 453F ONVOY, LLC - MT 650   2023-08-20   
406-503 9 Billings MT 453F ONVOY, LLC - MT 650   2023-08-20   
406-506 3 Billings MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-506 4 Billings MT 453F ONVOY, LLC - MT 650   2020-10-05   
406-506 5 Billings MT 453F ONVOY, LLC - MT 650   2020-10-05   
406-506 6 Billings MT 453F ONVOY, LLC - MT 650   2020-10-05   
406-506 7 Billings MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-516 1 Laurel MT 453F ONVOY, LLC - MT 650   2024-04-14   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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