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: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-840 A Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654      
406-840 0 Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654   2012-12-17   
406-840 1 Silvertip MT CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-14   
406-840 2 Silvertip MT CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-11-14   
406-840 3 Silvertip MT CHYNWYMAXGX  624H ONVOY SPECTRUM, LLC 654   2021-07-19   
406-840 4 Silvertip MT CHYNWYMAQMD  994E BANDWIDTH.COM CLEC, LLC - MT 654   2012-04-15   
406-840 5 Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654   2019-09-15   
406-840 6 Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654   2019-09-15   
406-840 7 Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654   2007-07-15   
406-840 8 Silvertip MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654   2011-07-11   

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

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