Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 792K CHARTER IP ENABLED SERVICES, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-602 7 Bozeman MT   650   2021-06-23   
406-622 9 Fort Benton MT   648   2017-10-08   
406-624 6 Bozeman MT   650   2005-06-12   
406-625 2 Stevensville MT   648   2005-10-21   
406-626 6 Frenchtown MT   648   2024-10-14   
406-633 4 Laurel MT   650   2011-03-27   
406-680 0 Malta MT   648   2021-04-23   
406-692 6 Yellow Bay MT   648   2014-06-27   
406-702 A Billings MT BLNGMT93HMD  650      
406-702 1 Billings MT   650   2012-05-06   
406-702 7 Billings MT   650   2013-12-06   
406-709 A Lakeside MT KLSLMTAZ1MD  648      
406-709 2 Lakeside MT   648      
406-718 1 Darby MT   648   2024-09-08   
406-722 7 Alberton MT   648   2025-04-28   
406-730 A Whitefish MT KLSLMTAZ1MD  648      
406-730 1 Whitefish MT   648   2008-05-05   
406-730 2 Whitefish MT   648   2006-04-21   
406-730 8 Whitefish MT   648   2013-11-11   
406-770 3 Great Falls MT   648   2008-06-09   
406-812 1 Laurel MT   650   2019-04-21   
406-813 8 Belgrade MT   650   2012-03-13   
406-830 A Missoula MT MSSLMTEH4MD  648      
406-830 3 Missoula MT   648   2007-04-08   
406-833 2 Ronan MT   648   2024-03-31   
406-839 A Billings MT BLNGMT93HMD  650      
406-839 2 Billings MT   650   2007-12-02   
406-839 9 Billings MT   650   2006-11-21   
406-845 A Cut Bank MT HLNAMTHH5MD  648      
406-845 1 Cut Bank MT   648   2009-01-02   
406-846 4 Deer Lodge MT   648   2007-05-15   
406-866 0 Great Falls MT   648   2006-03-13   
406-873 0 Cut Bank MT   648   2006-07-03   
406-890 A Kalispell MT KLSLMTAZ1MD  648      
406-890 2 Kalispell MT   648   2007-03-03   
406-894 2 Billings MT   650   2014-09-30   
406-897 A Columbia Falls MT KLSLMTAZ1MD  648      
406-897 2 Columbia Falls MT   648   2006-04-21   
406-897 5 Columbia Falls MT   648   2015-11-12   
406-898 A Bozeman MT BZMNMTEF2MD  650      
406-898 1 Bozeman MT   650   2009-05-22   
406-924 2 Belgrade MT   650   2006-12-08   
406-924 6 Belgrade MT   650   2005-06-27   
406-925 5 Dillon MT   648   2008-11-21   
406-926 A Missoula MT MSSLMTEH4MD  648      
406-926 1 Missoula MT   648   2011-03-06   
406-926 2 Missoula MT   648   2011-08-21   
406-926 3 Missoula MT   648   2011-12-03   
406-926 6 Missoula MT   648   2013-11-11   
406-932 7 Big Timber MT   650   2017-05-20   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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