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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-742 A Fairview MT FRVWMTMARS2  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-742 0 Fairview MT BLNGMT933MD  073H TELNYX LLC 650   2018-07-25   
406-742 1 Fairview MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-03-28   
406-742 2 Fairview MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-742 3 Fairview MT   145J TERRA NOVA TELECOM INC. 650   2021-01-21   
406-742 4 Fairview MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-742 5 Fairview MT FRVWMTMARS2  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-742 6 Fairview MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-742 7 Fairview MT BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-11   
406-742 8 Fairview MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2025-01-16   
406-742 9 Fairview MT FRVWMTMARS2  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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