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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-577 A Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-577 0 Bozeman MT   588H AIRUS, INC. - MT 650   2018-02-26   
406-577 1 Bozeman MT   453F ONVOY, LLC - MT 650      
406-577 2 Bozeman MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2011-07-28   
406-577 3 Bozeman MT   453F ONVOY, LLC - MT 650   2015-08-13   
406-577 4 Bozeman MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2017-09-15   
406-577 5 Bozeman MT   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2014-08-06   
406-577 6 Bozeman MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-11-05   
406-577 7 Bozeman MT   508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-10   
406-577 8 Bozeman MT   453F ONVOY, LLC - MT 650   2014-03-31   
406-577 9 Bozeman MT   453F ONVOY, LLC - MT 650   2014-03-31   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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