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
406-815 5 Red Lodge MT 453F ONVOY, LLC - MT 650   2020-11-10   
406-815 6 Red Lodge MT 453F ONVOY, LLC - MT 650   2020-01-05   
406-815 7 Red Lodge MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-815 8 Red Lodge MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-823 2 Livingston MT 453F ONVOY, LLC - MT 650   2020-01-05   
406-823 3 Livingston MT 453F ONVOY, LLC - MT 650   2012-12-17   
406-823 4 Livingston MT 453F ONVOY, LLC - MT 650   2012-12-17   
406-823 5 Livingston MT 453F ONVOY, LLC - MT 650   2020-01-05   
406-823 8 Livingston MT 453F ONVOY, LLC - MT 650   2011-10-24   
406-831 5 Billings MT 453F ONVOY, LLC - MT 650   2020-12-03   
406-831 6 Billings MT 453F ONVOY, LLC - MT 650   2020-12-03   
406-831 7 Billings MT 453F ONVOY, LLC - MT 650   2020-12-03   
406-831 8 Billings MT 453F ONVOY, LLC - MT 650   2020-12-03   
406-838 5 Cooke City MT 453F ONVOY, LLC - MT 650   2011-10-20   
406-838 7 Cooke City MT 453F ONVOY, LLC - MT 650   2007-04-14   
406-838 8 Cooke City MT 453F ONVOY, LLC - MT 650   2017-07-24   
406-838 9 Cooke City MT 453F ONVOY, LLC - MT 650   2017-07-24   
406-848 5 Gardiner MT 453F ONVOY, LLC - MT 650   2011-10-21   
406-848 6 Gardiner MT 453F ONVOY, LLC - MT 650   2007-03-19   
406-851 2 Miles City MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-851 3 Miles City MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-851 4 Miles City MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-851 6 Miles City MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-852 7 Miles City MT 453F ONVOY, LLC - MT 650   2011-10-24   
406-898 0 Bozeman MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-898 2 Bozeman MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-898 3 Bozeman MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-898 4 Bozeman MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-898 5 Bozeman MT 453F ONVOY, LLC - MT 650   2019-11-18   
406-898 9 Bozeman MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-901 4 Billings MT 453F ONVOY, LLC - MT 650   2024-02-09   
406-905 A Joliet MT 453F ONVOY, LLC - MT 650      
406-905 0 Joliet MT 453F ONVOY, LLC - MT 650   2012-12-17   
406-905 3 Joliet MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-905 4 Joliet MT 453F ONVOY, LLC - MT 650   2019-09-15   
406-905 5 Joliet MT 453F ONVOY, LLC - MT 650   2019-09-15   
406-905 7 Joliet MT 453F ONVOY, LLC - MT 650   2011-11-28   
406-919 0 Belgrade MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-919 1 Belgrade MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-919 2 Belgrade MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-919 3 Belgrade MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-920 4 Bozeman MT 453F ONVOY, LLC - MT 650   2019-09-15   
406-920 7 Bozeman MT 453F ONVOY, LLC - MT 650   2021-07-05   
406-924 0 Belgrade MT 453F ONVOY, LLC - MT 650   2011-04-29   
406-924 7 Belgrade MT 453F ONVOY, LLC - MT 650   2006-11-06   
406-936 2 Clyde Park MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-936 3 Clyde Park MT 453F ONVOY, LLC - MT 650   2019-09-15   
406-936 4 Clyde Park MT 453F ONVOY, LLC - MT 650   2019-10-28   
406-936 5 Clyde Park MT 453F ONVOY, LLC - MT 650   2021-03-07   
406-936 6 Clyde Park MT 453F ONVOY, LLC - MT 650   2020-01-05   

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

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