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: 229

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-229 A Cut Bank MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-229 0 Cut Bank MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-229 1 Cut Bank MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-229 2 Cut Bank MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2017-08-15   
406-229 3 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-229 4 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-06-05   
406-229 5 Cut Bank MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2014-10-23   
406-229 6 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-01-03   
406-229 7 Cut Bank MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-229 8 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-04-04   
406-229 9 Cut Bank MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2024-12-27   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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