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: 226

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-226 A East Glacier Park MT EGPKMTMARS1  9636 QWEST CORPORATION 648      
406-226 0 East Glacier Park MT   453F ONVOY, LLC - MT 648   2019-10-28   
406-226 1 East Glacier Park MT   073H TELNYX LLC 648   2020-08-09   
406-226 2 East Glacier Park MT   453F ONVOY, LLC - MT 648   2019-09-15   
406-226 3 East Glacier Park MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-226 4 East Glacier Park MT   9636 QWEST CORPORATION 648      
406-226 5 East Glacier Park MT   9636 QWEST CORPORATION 648      
406-226 6 East Glacier Park MT   508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-226 7 East Glacier Park MT   453F ONVOY, LLC - MT 648   2007-04-14   
406-226 8 East Glacier Park MT   453F ONVOY, LLC - MT 648   2011-10-20   
406-226 9 East Glacier Park MT   9636 QWEST CORPORATION 648      

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

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