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
406-446 1 Red Lodge MT   9636 QWEST CORPORATION 650      
406-446 2 Red Lodge MT   9636 QWEST CORPORATION 650      
406-446 3 Red Lodge MT   9636 QWEST CORPORATION 650      
406-446 4 Red Lodge MT   9636 QWEST CORPORATION 650      
406-446 5 Red Lodge MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2026-02-06   
406-446 6 Red Lodge MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-446 7 Red Lodge MT   453F ONVOY, LLC - MT 650   2011-10-24   
406-446 8 Red Lodge MT   453F ONVOY, LLC - MT 650   2019-10-28   
406-446 9 Red Lodge MT   9636 QWEST CORPORATION 650      
406-447 A Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-447 1 Helena MT   9636 QWEST CORPORATION 648      
406-447 2 Helena MT   9636 QWEST CORPORATION 648      
406-447 3 Helena MT   9636 QWEST CORPORATION 648      
406-447 4 Helena MT   9636 QWEST CORPORATION 648      
406-447 5 Helena MT   9636 QWEST CORPORATION 648      
406-447 6 Helena MT   9636 QWEST CORPORATION 648      
406-447 7 Helena MT   9636 QWEST CORPORATION 648      
406-447 8 Helena MT   9636 QWEST CORPORATION 648      
406-447 9 Helena MT   9636 QWEST CORPORATION 648      
406-448 A North Poplar MT NPPLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-448 2 North Poplar MT   2247 NEMONT TEL COOP INC 650      
406-448 7 North Poplar MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-448 8 North Poplar MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-449 A Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-450 A Shelby MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 0 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 1 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 2 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 3 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 4 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 5 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 6 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 8 Shelby MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-451 A Bozeman MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650      
406-451 0 Bozeman MT   453F ONVOY, LLC - MT 650   2017-11-17   
406-451 1 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2007-12-18   
406-451 2 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2007-12-28   
406-451 3 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2008-02-19   
406-451 4 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2008-03-04   
406-451 5 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2008-09-08   
406-451 6 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2008-10-08   
406-451 7 Bozeman MT   453F ONVOY, LLC - MT 650   2012-04-20   
406-451 8 Bozeman MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2004-09-27   
406-451 9 Bozeman MT   6529 T-MOBILE USA, INC. 650   2004-09-27   
406-452 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-453 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-454 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 A Great Falls MT   247L YORKSTREAM COMMUNICATIONS LLC 648      
406-455 0 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 1 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 2 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 3 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 4 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 5 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 6 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 7 Great Falls MT   247L YORKSTREAM COMMUNICATIONS LLC 648   2025-10-06   
406-455 8 Great Falls MT   9636 QWEST CORPORATION 648      
406-455 9 Great Falls MT   9636 QWEST CORPORATION 648      
406-456 A South Chester MT HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-457 A Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-457 0 Helena MT   9636 QWEST CORPORATION 648      
406-457 1 Helena MT   9636 QWEST CORPORATION 648      
406-457 2 Helena MT   9636 QWEST CORPORATION 648      
406-457 3 Helena MT   9636 QWEST CORPORATION 648      
406-457 4 Helena MT   9636 QWEST CORPORATION 648      
406-457 5 Helena MT   9636 QWEST CORPORATION 648      
406-457 7 Helena MT   9636 QWEST CORPORATION 648      
406-457 8 Helena MT   9636 QWEST CORPORATION 648      
406-457 9 Helena MT   9636 QWEST CORPORATION 648      
406-458 A Helena MT HLNAMTNORS1  9636 QWEST CORPORATION 648      
406-458 0 Helena MT   9636 QWEST CORPORATION 648      
406-458 1 Helena MT   9636 QWEST CORPORATION 648      
406-458 3 Helena MT   9636 QWEST CORPORATION 648      
406-458 4 Helena MT   9636 QWEST CORPORATION 648      
406-458 5 Helena MT   9636 QWEST CORPORATION 648      
406-458 6 Helena MT   9636 QWEST CORPORATION 648      
406-458 7 Helena MT   9636 QWEST CORPORATION 648      
406-458 8 Helena MT   9636 QWEST CORPORATION 648      
406-458 9 Helena MT   9636 QWEST CORPORATION 648      
406-459 A Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-460 A Shelby MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 0 Shelby MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 1 Shelby MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 2 Shelby MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-461 A Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-462 A Winifred MT HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-463 A Power MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-464 A Roy MT RNDPMTXCDS0  2246 MID-RIVERS TEL. COOP., INC. 650      
406-464 2 Roy MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-464 4 Roy MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-464 6 Roy MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-465 A Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
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      

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

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