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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-640 A West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 0 West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 1 West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 2 West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 3 West Yellowstone MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2010-02-20   
406-640 4 West Yellowstone MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-01-10   
406-640 5 West Yellowstone MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-02-12   
406-640 6 West Yellowstone MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-08   
406-640 7 West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2022-06-18   
406-640 8 West Yellowstone MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2014-03-31   
406-640 9 West Yellowstone MT BLNGMT933MD  073H TELNYX LLC 650   2018-07-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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