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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
406-945 5 Havre MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-945 7 Havre MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2006-06-08   
406-945 8 Havre MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-945 9 Havre MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-11-21   
406-946 A Livingston MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 0 Livingston MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 1 Livingston MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-03-12   
406-946 2 Livingston MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2016-02-21   
406-946 3 Livingston MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650   2016-03-18   
406-946 4 Livingston MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-946 5 Livingston MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-946 7 Livingston MT   508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-11   
406-946 8 Livingston MT   453F ONVOY, LLC - MT 650   2019-10-28   
406-946 9 Livingston MT   073H TELNYX LLC 650   2017-03-31   
406-947 A Musselshell MT RNDPMTXCDS0  2246 MID-RIVERS TEL. COOP., INC. 650      
406-948 A Glendive MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 0 Glendive MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 1 Glendive MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-948 2 Glendive MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-948 3 Glendive MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650   2010-10-01   
406-948 4 Glendive MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-948 5 Glendive MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-948 6 Glendive MT   453F ONVOY, LLC - MT 650   2013-01-24   
406-948 7 Glendive MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-948 8 Glendive MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-08-10   
406-948 9 Glendive MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-949 A Townsend MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-949 0 Townsend MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-949 1 Townsend MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-949 2 Townsend MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-949 3 Townsend MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-949 4 Townsend MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-951 A Miles City MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 0 Miles City MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 1 Miles City MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 2 Miles City MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 3 Miles City MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 4 Miles City MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-951 6 Miles City MT   145J TERRA NOVA TELECOM INC. 650   2024-02-12   
406-951 8 Miles City MT   145J TERRA NOVA TELECOM INC. 650   2025-02-14   
406-951 9 Miles City MT   453F ONVOY, LLC - MT 650   2024-04-14   
406-952 A Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-952 0 Great Falls MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2007-02-07   
406-952 1 Great Falls MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-06-20   
406-952 2 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2019-11-25   
406-952 3 Great Falls MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2006-11-30   
406-952 4 Great Falls MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2005-07-17   
406-952 5 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 6 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 7 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 8 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 9 Great Falls MT   624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-953 A Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-953 0 Hardin MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 1 Hardin MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-11-24   
406-953 2 Hardin MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-953 3 Hardin MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-953 4 Hardin MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 5 Hardin MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-953 6 Hardin MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-953 8 Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650   2019-01-10   
406-953 9 Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650   2019-01-10   
406-954 A Roy MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-954 0 Roy MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-955 A Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-01-18   
406-955 0 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2025-11-25   
406-955 1 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-08-22   
406-955 2 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 3 Kalispell MT   6529 T-MOBILE USA, INC. 648   2025-10-12   
406-955 4 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 5 Kalispell MT   5562 METROPCS, INC. 648   2024-10-14   
406-955 6 Kalispell MT   6529 T-MOBILE USA, INC. 648   2024-02-01   
406-955 7 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 8 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-01-19   
406-955 9 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-01-19   
406-956 A Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-956 0 Baker MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-12-17   
406-957 A Terry MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 0 Terry MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 1 Terry MT   588H AIRUS, INC. - MT 650   2020-03-01   
406-957 2 Terry MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-957 3 Terry MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-02-27   
406-957 6 Terry MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-957 7 Terry MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-957 8 Terry MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 9 Terry MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-960 A Dillon MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 0 Dillon MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 4 Dillon MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-961 A Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 0 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 1 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 2 Hamilton MT   145J TERRA NOVA TELECOM INC. 648   2025-12-08   
406-961 3 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 4 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 5 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 6 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 7 Hamilton MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-23   
406-961 8 Hamilton MT   9636 QWEST CORPORATION 648      
406-961 9 Hamilton MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-11-21   

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

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