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: 646

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-646 A West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 0 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 1 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 2 West Yellowstone MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-646 3 West Yellowstone MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-646 4 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 5 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 6 West Yellowstone MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-646 7 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      
406-646 9 West Yellowstone MT WYLWMTMARS1  9636 QWEST CORPORATION 650      

Last updated: Tue, 30 May 2023 01:08:39 UTC

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