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: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-637 A Terry MT TRRYMTMARS1  9636 QWEST CORPORATION 650      
406-637 3 Terry MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2012-02-10   
406-637 4 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-637 5 Terry MT TRRYMTMARS1  9636 QWEST CORPORATION 650      
406-637 6 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-637 7 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-10-24   
406-637 8 Terry MT BLNGMT93DS0  588H AIRUS, INC. - MT 650   2019-05-11   

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

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