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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
406-763 5 Gallatin Gateway MT GLGTMTMARS1  9636 QWEST CORPORATION 650      
406-763 6 Gallatin Gateway MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-763 7 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-04-14   
406-763 8 Gallatin Gateway MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-01-27   
406-763 9 Gallatin Gateway MT GLGTMTMARS1  9636 QWEST CORPORATION 650      
406-764 A North Frannie MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 0 North Frannie MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 2 North Frannie MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-764 9 North Frannie MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-765 A Plentywood MT PLWDMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-765 1 Plentywood MT PLWDMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-765 2 Plentywood MT PLWDMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-765 3 Plentywood MT PLWDMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-765 5 Plentywood MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-08-29   
406-765 6 Plentywood MT BLNGMTWEBMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2021-05-04   
406-765 7 Plentywood MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-765 8 Plentywood MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-765 9 Plentywood MT PLWDMTXCDS0  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 PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-768 3 Poplar MT PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-768 5 Poplar MT PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-768 6 Poplar MT PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-768 7 Poplar MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-768 8 Poplar MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-768 9 Poplar MT PPLRMTXCDS0  2247 NEMONT TEL COOP INC 650      
406-769 A Bainville MT BNVLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-769 2 Bainville MT BNVLMTXCRS1  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 GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-770 A Great Falls MT GRFLMTMAUMD  318J COMCAST IP PHONE, LLC 648      
406-770 0 Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-11-18   
406-770 1 Great Falls MT GRFLMTMAUMD  318J COMCAST IP PHONE, LLC 648   2023-06-12   
406-770 2 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-11-18   
406-770 3 Great Falls MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2008-06-09   
406-770 4 Great Falls MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2016-08-16   
406-770 5 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-11-18   
406-770 6 Great Falls MT MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2013-03-18   
406-770 7 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-11-18   
406-770 8 Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2022-09-11   
406-770 9 Great Falls MT MSSLMTAG5MD  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 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-772 5 Plevna MT WGLNMTXCDS2  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 WGLNMTXCDS2  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 BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-773 5 Richey MT WGLNMTXCDS2  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 WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 A Lambert MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 1 Lambert MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2026-04-30   
406-774 3 Lambert MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 4 Lambert MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-774 7 Lambert MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-774 9 Lambert MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-775 A Ekalaka MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-775 4 Ekalaka MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2026-05-09   
406-775 5 Ekalaka MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-775 6 Ekalaka MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-775 7 Ekalaka MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-775 8 Ekalaka MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-775 9 Ekalaka MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-776 A Savage MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-777 A Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 0 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 1 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 2 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 3 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 4 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 5 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 6 Stevensville MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-777 7 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-777 8 Stevensville MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-777 9 Stevensville MT STVLMTMARS1  9636 QWEST CORPORATION 648      
406-778 A Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 1 Baker MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-778 2 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 3 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 4 Baker MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-778 5 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 6 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 7 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 8 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-778 9 Baker MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-779 A Flaxville Rural MT SFVLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-779 3 Flaxville Rural MT SFVLMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-779 7 Flaxville Rural MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-779 9 Flaxville Rural MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-780 A Columbus MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-780 0 Columbus MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-780 1 Columbus MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-780 2 Columbus MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2017-10-21   
406-780 3 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-780 4 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-780 5 Columbus MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-01-05   

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

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