Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Fromberg, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-668 A FRMBMTMARS1  9636 QWEST CORPORATION 650      
406-668 0 BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-668 1 BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-668 2 BLNGMTMATMD  935G TRI TEL, INC. - MT 650   2013-01-28   
406-668 3 BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-05-31   
406-668 4 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-10-20   
406-668 5 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-668 6 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-668 7 FRMBMTMARS1  9636 QWEST CORPORATION 650      
406-668 8 BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-11   
406-668 9 FRMBMTMARS1  9636 QWEST CORPORATION 650      
406-719 A BLNGMTASMMD  506J TWILIO INTERNATIONAL, INC. 650      
406-719 0 BLNGMT933MD  073H TELNYX LLC 650   2019-10-21   
406-719 1 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-01-05   
406-719 2 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-11-10   
406-719 3 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-02-11   
406-719 4 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-10-20   
406-719 5 BLNGMTASMMD  506J TWILIO INTERNATIONAL, INC. 650   2022-08-28   
406-719 6 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-10-20   
406-719 7 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-01-05   
406-719 8 BLNGMT93BMD  321J HD CARRIER LLC 650   2020-09-27   
406-719 9 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-02-11   
406-997 A   7421 AT&T - LOCAL 650   2024-03-09   
406-997 0   624H ONVOY SPECTRUM, LLC 650   2024-03-22   
406-997 7   145J TERRA NOVA TELECOM INC. 650   2024-04-22   
406-997 9   7421 AT&T - LOCAL 650   2024-03-09   

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

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