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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
406-481 2 Missoula MT GRFLMTMA69Z  490J DISH WIRELESS, LLC 648   2023-08-21   
406-481 3 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-06-19   
406-481 4 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-09-28   
406-481 5 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-09   
406-481 6 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2024-02-02   
406-481 7 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2024-02-02   
406-481 8 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-09-28   
406-481 9 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-09-28   
406-482 A Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 0 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2025-01-19   
406-482 1 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 2 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 3 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 4 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 6 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 7 Sidney MT   145J TERRA NOVA TELECOM INC. 650   2022-11-03   
406-482 8 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-482 9 Sidney MT SDNYMTMARS1  9636 QWEST CORPORATION 650      
406-483 A Dagmar MT DGMRMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-484 A Crooked Creek MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 0 Crooked Creek MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 2 Crooked Creek MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 4 Crooked Creek MT   145J TERRA NOVA TELECOM INC. 654   2025-08-29   
406-484 6 Crooked Creek MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-484 9 Crooked Creek MT BASNWYXCDS1  2296 TRI-COUNTY TEL. ASSN., INC. 654      
406-485 A Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 1 Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 2 Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 3 Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 5 Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-485 7 Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-485 8 Circle MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-485 9 Circle MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-486 A Fallon MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-487 A Scobey MT SCBYMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-487 2 Scobey MT SCBYMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-487 5 Scobey MT SCBYMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-488 A Sidney MT SDNYMTAORS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650      
406-489 A Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 0 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 1 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 2 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 3 Sidney MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-489 5 Sidney MT   145J TERRA NOVA TELECOM INC. 650   2023-06-24   
406-489 6 Sidney MT BLNGMT939MD  145J TERRA NOVA TELECOM INC. 650   2024-09-14   
406-489 8 Sidney MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2025-01-23   
406-489 9 Sidney MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2025-10-10   
406-490 A Butte MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-491 A Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 0 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 1 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 2 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 3 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 4 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 5 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 6 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 7 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-491 8 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-01-29   
406-491 9 Butte MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2023-10-02   
406-492 A Avon MT AVONMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-493 A Missoula MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-493 0 Missoula MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-06-19   
406-493 1 Missoula MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2007-10-01   
406-493 2 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-04-09   
406-493 3 Missoula MT MSSLMTMADS0  9636 QWEST CORPORATION 648   2009-03-30   
406-493 4 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-06-08   
406-493 5 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-08-24   
406-493 6 Missoula MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2005-08-13   
406-493 7 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-10-10   
406-493 8 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-10-29   
406-493 9 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-12-07   
406-494 A Butte MT BUTTMT18RS1  9636 QWEST CORPORATION 648      
406-495 A Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 0 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 1 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 2 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 3 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 5 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 6 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 7 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 8 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-495 9 Helena MT HLNAMTMADS0  9636 QWEST CORPORATION 648      
406-496 A Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 0 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 1 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 2 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 3 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 4 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 5 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 6 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 7 Butte MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2024-05-19   
406-496 8 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-496 9 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 A Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 0 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2023-11-27   
406-497 1 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 2 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 3 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 4 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 5 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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