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: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-578 A Wilsall MT WLSLMTMARS1  9636 QWEST CORPORATION 650      
406-578 0 Wilsall MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-578 1 Wilsall MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-578 2 Wilsall MT WLSLMTMARS1  9636 QWEST CORPORATION 650      
406-578 3 Wilsall MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-578 4 Wilsall MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-578 5 Wilsall MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-10-24   
406-578 7 Wilsall MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-578 8 Wilsall MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-08-10   
406-578 9 Wilsall MT WLSLMTMARS1  9636 QWEST CORPORATION 650      

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

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