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: 905

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-905 A Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-905 0 Joliet MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-905 1 Joliet MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-04-27   
406-905 2 Joliet MT   935G TRI TEL, INC. - MT 650   2013-01-28   
406-905 3 Joliet MT   453F ONVOY, LLC - MT 650   2021-07-05   
406-905 4 Joliet MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-905 5 Joliet MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-905 6 Joliet MT   624H ONVOY SPECTRUM, LLC 650   2024-03-22   
406-905 7 Joliet MT   453F ONVOY, LLC - MT 650   2011-11-28   
406-905 8 Joliet MT   073H TELNYX LLC 650   2018-07-25   
406-905 9 Joliet MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-02-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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