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: 445

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-445 A Red Lodge MT RBRTMTMARS1  9636 QWEST CORPORATION 650      
406-445 0 Red Lodge MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-445 1 Red Lodge MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-04-19   
406-445 2 Red Lodge MT   9636 QWEST CORPORATION 650      
406-445 3 Red Lodge MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2011-03-27   
406-445 4 Red Lodge MT   935G TRI TEL, INC. - MT 650   2013-01-28   
406-445 5 Red Lodge MT   453F ONVOY, LLC - MT 650   2021-07-05   
406-445 6 Red Lodge MT   073H TELNYX LLC 650   2017-03-31   
406-445 7 Red Lodge MT   453F ONVOY, LLC - MT 650   2007-03-19   
406-445 8 Red Lodge MT   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2023-04-08   
406-445 9 Red Lodge MT   9636 QWEST CORPORATION 650      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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