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: 318

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-318 A Billings MT   453F ONVOY, LLC - MT 650   2025-03-23   
406-318 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-01-15   
406-318 1 Billings MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2024-12-05   
406-318 2 Billings MT BLNGMTWE9MD  073H TELNYX LLC 650   2023-01-09   
406-318 3 Billings MT   145J TERRA NOVA TELECOM INC. 650   2023-06-24   
406-318 4 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2024-10-11   
406-318 5 Billings MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-01-04   
406-318 6 Billings MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-01-04   
406-318 7 Billings MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-01-04   
406-318 8 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2015-12-10   
406-318 9 Billings MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-06-29   

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

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