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: 468

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-468 A Cascade MT CSCDMTMARS1  9636 QWEST CORPORATION 648      
406-468 0 Cascade MT   9636 QWEST CORPORATION 648      
406-468 1 Cascade MT   453F ONVOY, LLC - MT 648   2012-12-10   
406-468 2 Cascade MT   9636 QWEST CORPORATION 648      
406-468 3 Cascade MT   9636 QWEST CORPORATION 648      
406-468 4 Cascade MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-01-26   
406-468 5 Cascade MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-09-30   
406-468 6 Cascade MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2020-09-05   
406-468 7 Cascade MT   453F ONVOY, LLC - MT 648   2007-03-19   
406-468 8 Cascade MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-09-12   
406-468 9 Cascade MT   9636 QWEST CORPORATION 648      

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

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