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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
406-977 0 Jordan MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-977 2 Jordan MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-977 6 Jordan MT   145J TERRA NOVA TELECOM INC. 650   2026-01-04   
406-977 7 Jordan MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-977 8 Jordan MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-977 9 Jordan MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-978 A Baker MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-978 2 Baker MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-978 3 Baker MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-978 9 Baker MT   145J TERRA NOVA TELECOM INC. 650   2026-01-04   
406-979 A Richey MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-979 0 Richey MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-979 5 Richey MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-979 8 Richey MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-979 9 Richey MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-980 A Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-980 0 Townsend MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-980 1 Townsend MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-980 5 Townsend MT   624H ONVOY SPECTRUM, LLC 648   2025-01-02   
406-980 6 Townsend MT   453F ONVOY, LLC - MT 648   2021-03-07   
406-980 7 Townsend MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-980 8 Townsend MT   453F ONVOY, LLC - MT 648   2020-11-08   
406-981 A South Miles City MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-981 0 South Miles City MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-981 1 South Miles City MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-982 A Yellow Bay MT YLBYMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-982 0 Yellow Bay MT   453F ONVOY, LLC - MT 648   2021-07-08   
406-982 1 Yellow Bay MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-03-02   
406-982 2 Yellow Bay MT   2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-982 3 Yellow Bay MT   2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-982 7 Yellow Bay MT   508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-31   
406-982 8 Yellow Bay MT   073H TELNYX LLC 648   2025-02-03   
406-982 9 Yellow Bay MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-983 A Ashland MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-983 0 Ashland MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-983 1 Ashland MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2018-08-27   
406-983 2 Ashland MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-983 9 Ashland MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-984 A Birney MT BRNYMTXCRS1  2251 RANGE TEL COOP INC 650      
406-984 6 Birney MT   2251 RANGE TEL COOP INC 650      
406-987 A Glendive MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-987 0 Glendive MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-987 1 Glendive MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-987 2 Glendive MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-987 3 Glendive MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-987 4 Glendive MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-987 5 Glendive MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-987 6 Glendive MT   508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-11   
406-987 8 Glendive MT   624H ONVOY SPECTRUM, LLC 650   2025-01-16   
406-987 9 Glendive MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-988 A Dillon MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-988 0 Dillon MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2006-03-24   
406-988 4 Dillon MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-03-02   
406-988 6 Dillon MT   453F ONVOY, LLC - MT 648   2021-03-07   
406-988 7 Dillon MT   453F ONVOY, LLC - MT 648   2006-10-19   
406-988 8 Dillon MT   453F ONVOY, LLC - MT 648   2021-03-07   
406-988 9 Dillon MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-989 A West Glendive MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-989 0 West Glendive MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-989 1 West Glendive MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-989 9 West Glendive MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-990 A Lame Deer MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-990 0 Lame Deer MT   145J TERRA NOVA TELECOM INC. 650   2025-10-06   
406-990 8 Lame Deer MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2021-08-27   
406-991 A Marion MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-991 0 Marion MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-991 1 Marion MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-991 2 Marion MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-991 3 Marion MT   453F ONVOY, LLC - MT 648   2019-10-28   
406-991 4 Marion MT   453F ONVOY, LLC - MT 648   2019-09-15   
406-991 6 Marion MT   6529 T-MOBILE USA, INC. 648   2024-06-09   
406-991 7 Marion MT   453F ONVOY, LLC - MT 648   2007-12-06   
406-991 8 Marion MT   453F ONVOY, LLC - MT 648   2011-03-05   
406-991 9 Marion MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-992 A Helena MT   453F ONVOY, LLC - MT 648      
406-992 0 Helena MT   453F ONVOY, LLC - MT 648   2025-05-17   
406-993 A Big Sky MT BGSYMTXCDS0  2255 3 RIVERS TEL. COOP., INC. 650      
406-993 0 Big Sky MT   6529 T-MOBILE USA, INC. 650   2024-07-24   
406-993 1 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 2 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 3 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 4 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 5 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 6 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 7 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-993 8 Big Sky MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-02-14   
406-993 9 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-994 A Bozeman MT BZMNMTMADS0  9636 QWEST CORPORATION 650      
406-995 A Big Sky MT BGSYMTXCDS0  2255 3 RIVERS TEL. COOP., INC. 650      
406-995 0 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650   2023-12-16   
406-995 1 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 2 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 3 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 4 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 5 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 6 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 7 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 8 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-995 9 Big Sky MT   2255 3 RIVERS TEL. COOP., INC. 650      
406-996 A Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648      

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

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