Local Calling Guide

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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-466 A Choteau MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-466 0 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 1 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 2 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 3 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 4 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 5 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 6 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 7 Choteau MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-10-17   
406-466 8 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-466 9 Choteau MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 A Fairfield MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-467 0 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648   2023-12-31   
406-467 1 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 2 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 3 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 4 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 5 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 6 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 7 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 8 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
406-467 9 Fairfield MT   2255 3 RIVERS TEL. COOP., INC. 648      
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      
406-469 A Pendroy MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-470 A Shelby MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 0 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 1 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-10-16   
406-470 2 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-01-20   
406-470 4 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-04-09   
406-470 6 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-02-06   
406-470 7 Shelby MT   453F ONVOY, LLC - MT 648   2011-09-30   
406-470 8 Shelby MT   453F ONVOY, LLC - MT 648   2019-10-28   
406-470 9 Shelby MT   453F ONVOY, LLC - MT 648   2021-07-05   
406-471 A Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-472 A Dupuyer MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-473 A Judith Gap MT FTBNMTXCDS0  3310 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-474 A Flaxville MT FLVLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-475 A Helena MT CNFYMT02RS1  9636 QWEST CORPORATION 648      
406-475 0 Helena MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-03-12   
406-475 1 Helena MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-04-15   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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