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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
406-872 0 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-15   
406-872 1 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-15   
406-872 2 Polson MT PLSNMTPC1MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2007-12-06   
406-872 3 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-15   
406-872 4 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-15   
406-872 5 Polson MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2025-02-23   
406-872 6 Polson MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-872 7 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-03-05   
406-873 A Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-873 0 Cut Bank MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-07-03   
406-873 1 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2006-10-19   
406-873 2 Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-873 3 Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-873 4 Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-873 5 Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-873 6 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-873 7 Cut Bank MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-873 8 Cut Bank MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-02-21   
406-873 9 Cut Bank MT CTBNMTMARS1  9636 QWEST CORPORATION 648      
406-874 A Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 3 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 5 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 6 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 7 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 8 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-874 9 Miles City MT MLCYMTBVDS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-875 A Pompeys Pillar MT WRDNMTXCDS0  2250 PROJECT TEL. CO., INC. 650      
406-876 A Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-876 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-01-17   
406-876 1 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-03-12   
406-876 2 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-03-12   
406-876 3 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-03-12   
406-876 4 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-04-15   
406-876 5 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-04-15   
406-876 6 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-01-17   
406-876 7 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-01-17   
406-876 8 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2022-04-29   
406-876 9 Billings MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-12-07   
406-877 A West Beach MT KEENNDXADS0  1632 RESERVATION TEL. COOP. 638      
406-878 A Great Falls MT MSSLMTXC7MD  732J NUSO, LLC 648      
406-878 2 Great Falls MT MSSLMTXC7MD  732J NUSO, LLC 648   2023-03-30   
406-878 8 Great Falls MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-879 A Havre MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-879 0 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-879 1 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-879 2 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-879 3 Havre MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2010-01-28   
406-879 4 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-879 5 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-879 6 Havre MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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