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: 409

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-409 A Billings MT BLNGMTASX0X  425J CSC WIRELESS, LLC 650      
406-409 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-01-17   
406-409 1 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-04-22   
406-409 2 Billings MT BLNGMTASX0X  425J CSC WIRELESS, LLC 650   2019-07-20   
406-409 3 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-409 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-409 5 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2023-01-24   
406-409 6 Billings MT   6529 T-MOBILE USA, INC. 650   2024-01-26   
406-409 7 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-409 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-10-26   
406-409 9 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-10-26   

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

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