Local Calling Guide

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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 952

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-952 A Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-952 0 Great Falls MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2007-02-07   
406-952 1 Great Falls MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2008-06-20   
406-952 2 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2019-11-25   
406-952 3 Great Falls MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2006-11-30   
406-952 4 Great Falls MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2005-07-17   
406-952 5 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 6 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 7 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 8 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 9 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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