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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
406-749 0 Colstrip MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-749 1 Colstrip MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-749 2 Colstrip MT   145J TERRA NOVA TELECOM INC. 650   2021-09-28   
406-749 3 Colstrip MT   145J TERRA NOVA TELECOM INC. 650   2023-06-24   
406-749 4 Colstrip MT   145J TERRA NOVA TELECOM INC. 650   2022-05-05   
406-749 5 Colstrip MT   8140 RANGE TELEPHONE COOPERATIVE, INC. - MT 650   2023-12-12   
406-749 7 Colstrip MT   145J TERRA NOVA TELECOM INC. 650   2025-05-08   
406-749 8 Colstrip MT   073H TELNYX LLC 650   2024-09-12   
406-749 9 Colstrip MT   145J TERRA NOVA TELECOM INC. 650   2024-02-12   
406-750 A Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-751 A Kalispell MT KLSLMTXCDS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-752 A Kalispell MT KLSLMTXCDS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-753 A Brady MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-754 A Condon MT CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-755 A Kalispell MT KLSLMTXCDS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-756 A Kalispell MT KLSLMTXCDS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-757 A Decker MT DCKRMTXCRS1  2251 RANGE TEL COOP INC 654      
406-758 A Kalispell MT KLSLMTXCDS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-759 A Chester MT HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-759 2 Chester MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-11-25   
406-759 5 Chester MT   2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-759 6 Chester MT   2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-759 8 Chester MT   2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-759 9 Chester MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2020-02-24   
406-760 A Great Falls MT MSSLMTMAGMD  197D VONAGE AMERICA LLC 648      
406-760 0 Great Falls MT   197D VONAGE AMERICA LLC 648   2018-08-11   
406-760 1 Great Falls MT   453F ONVOY, LLC - MT 648      
406-760 2 Great Falls MT   453F ONVOY, LLC - MT 648   2022-11-17   
406-760 4 Great Falls MT   6529 T-MOBILE USA, INC. 648   2024-07-25   
406-760 8 Great Falls MT   6529 T-MOBILE USA, INC. 648   2022-02-08   
406-761 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-762 A Opheim MT OPHEMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-762 3 Opheim MT   2247 NEMONT TEL COOP INC 650      
406-762 7 Opheim MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-763 A Gallatin Gateway MT GLGTMTMARS1  9636 QWEST CORPORATION 650      
406-763 0 Gallatin Gateway MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-763 1 Gallatin Gateway MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2010-02-20   
406-763 2 Gallatin Gateway MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-02-12   
406-763 3 Gallatin Gateway MT   145J TERRA NOVA TELECOM INC. 650   2020-11-19   
406-763 4 Gallatin Gateway MT   9636 QWEST CORPORATION 650      
406-763 5 Gallatin Gateway MT   9636 QWEST CORPORATION 650      
406-763 6 Gallatin Gateway MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-763 7 Gallatin Gateway MT   453F ONVOY, LLC - MT 650   2007-04-14   
406-763 8 Gallatin Gateway MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-01-27   
406-763 9 Gallatin Gateway MT   9636 QWEST CORPORATION 650      
406-764 A North Frannie MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 0 North Frannie MT   2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 2 North Frannie MT   2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 9 North Frannie MT   2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-765 A Plentywood MT PLWDMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-765 1 Plentywood MT   2247 NEMONT TEL COOP INC 650      
406-765 2 Plentywood MT   2247 NEMONT TEL COOP INC 650      
406-765 3 Plentywood MT   2247 NEMONT TEL COOP INC 650      
406-765 5 Plentywood MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-08-29   
406-765 6 Plentywood MT   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2021-05-04   
406-765 7 Plentywood MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-765 8 Plentywood MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-765 9 Plentywood MT   2247 NEMONT TEL COOP INC 650      
406-766 A Froid MT FRODMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-767 A Ridge MT HLTTWYXCRS1  3410 RT COMMUNICATIONS 654      
406-768 A Poplar MT PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-768 2 Poplar MT   2247 NEMONT TEL COOP INC 650      
406-768 3 Poplar MT   2247 NEMONT TEL COOP INC 650      
406-768 5 Poplar MT   2247 NEMONT TEL COOP INC 650      
406-768 6 Poplar MT   2247 NEMONT TEL COOP INC 650      
406-768 7 Poplar MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-768 8 Poplar MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-768 9 Poplar MT   2247 NEMONT TEL COOP INC 650      
406-769 A Bainville MT BNVLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-769 2 Bainville MT   2247 NEMONT TEL COOP INC 650      
406-769 3 Bainville MT   145J TERRA NOVA TELECOM INC. 650   2025-08-28   
406-769 7 Bainville MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-770 A Great Falls MT GRFLMTMAUMD  318J COMCAST IP PHONE, LLC 648      
406-770 0 Great Falls MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-11-18   
406-770 1 Great Falls MT   318J COMCAST IP PHONE, LLC 648   2023-06-12   
406-770 2 Great Falls MT   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 3 Great Falls MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-06-09   
406-770 4 Great Falls MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2016-08-16   
406-770 5 Great Falls MT   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 6 Great Falls MT   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2013-03-18   
406-770 7 Great Falls MT   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 8 Great Falls MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2022-09-11   
406-770 9 Great Falls MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-06-05   
406-771 A Great Falls MT GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-772 A Plevna MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-772 2 Plevna MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-772 5 Plevna MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-772 7 Plevna MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-772 9 Plevna MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-773 A Richey MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-773 3 Richey MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-773 5 Richey MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-773 7 Richey MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-773 9 Richey MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 A Lambert MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 3 Lambert MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 4 Lambert MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-774 7 Lambert MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 9 Lambert MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-775 A Ekalaka MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      

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

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