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: 561

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-561 A Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650      
406-561 0 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-02-02   
406-561 1 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-02-02   
406-561 2 Billings MT BLNGMTMAXMD  5562 METROPCS, INC. 650   2018-08-04   
406-561 3 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2019-04-28   
406-561 4 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2019-04-28   
406-561 5 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-11-25   
406-561 6 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-05-10   
406-561 7 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-05-10   
406-561 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-03-22   
406-561 9 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2017-11-01   

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

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