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: 708

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-708 A Lewistown MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-708 2 Lewistown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-708 3 Lewistown MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2016-09-27   
406-708 4 Lewistown MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-04-09   
406-708 5 Lewistown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-708 6 Lewistown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2006-10-19   
406-708 7 Lewistown MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-708 8 Lewistown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-28   

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

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