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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
406-260 7 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-09-22   
406-260 8 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-10-20   
406-260 9 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-10-08   
406-261 A Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 0 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 1 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 2 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 3 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 4 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 5 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 6 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 7 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 8 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-261 9 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-262 A Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-262 0 Havre MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2015-09-10   
406-262 1 Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-262 2 Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-262 3 Havre MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-262 4 Havre MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-262 5 Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-262 6 Havre MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-01-13   
406-262 7 Havre MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-03-04   
406-262 8 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2006-10-19   
406-262 9 Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-263 A Glasgow MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-264 A Fort Shaw MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-265 A Havre MT HAVRMTMADS0  9636 QWEST CORPORATION 648      
406-266 A Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 0 Townsend MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2019-06-14   
406-266 1 Townsend MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-266 3 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 4 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 5 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-266 6 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-08   
406-266 7 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-19   
406-266 9 Townsend MT TWNSMTMARS1  9636 QWEST CORPORATION 648      
406-267 A Divide MT WSDMMTXCDS0  2254 SOUTHERN MONTANA TEL. CO. 648      
406-268 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 0 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 1 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 2 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 3 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 4 Great Falls MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2026-02-28   
406-268 5 Great Falls MT   520K TDS METROCOM, LLC 648   2025-11-17   
406-268 6 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 7 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 8 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-268 9 Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-269 A St Regis MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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