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: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-857 A Somers MT SMRSMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-857 0 Somers MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-857 1 Somers MT CHRLMT010MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2020-07-05   
406-857 2 Somers MT SMRSMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-857 3 Somers MT SMRSMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-857 4 Somers MT SMRSMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-857 5 Somers MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-857 7 Somers MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-857 8 Somers MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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