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: 290

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-290 A Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-290 0 Columbus MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-12-17   
406-290 1 Columbus MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-01-28   
406-290 2 Columbus MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-02-04   
406-290 3 Columbus MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-05-31   
406-290 4 Columbus MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-11-05   
406-290 5 Columbus MT BLNGMT93HMD  792K CHARTER IP ENABLED SERVICES, LLC 650   2011-03-27   
406-290 6 Columbus MT BLNGMTWE9MD  073H TELNYX LLC 650   2020-09-27   
406-290 7 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-05-06   
406-290 8 Columbus MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2018-06-07   
406-290 9 Columbus MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2008-11-26   

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

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