Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-879 7 Havre MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-879 8 Havre MT GRFLMTMAYMD  145J TERRA NOVA TELECOM INC. 648   2026-07-05   
406-879 9 Havre MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-03-29   
406-880 A Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-881 A Olney MT OLNYMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-881 0 Olney MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-881 1 Olney MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-881 2 Olney MT OLNYMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-881 3 Olney MT GRFLMTMAYMD  145J TERRA NOVA TELECOM INC. 648   2026-07-05   
406-881 4 Olney MT OLNYMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-882 A Eureka Rural MT ERKRMTXCDS1  2242 INTERBEL TEL. COOP., INC. 648      
406-883 A Polson MT PLSNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-884 A Polson MT PLSNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-884 1 Polson MT MSSLMTMACMD  5562 METROPCS, INC. 648   2023-09-08   
406-884 2 Polson MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2015-10-23   
406-884 4 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-28   
406-884 6 Polson MT PLSNMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-884 7 Polson MT MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2015-06-15   
406-884 8 Polson MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-885 A Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-886 A Swan Lake MT SWLKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-886 0 Swan Lake MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-08   
406-886 2 Swan Lake MT SWLKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-886 3 Swan Lake MT SWLKMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-886 4 Swan Lake MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-08   
406-886 6 Swan Lake MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-886 7 Swan Lake MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-886 8 Swan Lake MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-886 9 Swan Lake MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-887 A Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 1 Finley Point MT CHRLMT010MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2016-04-23   
406-887 2 Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 3 Finley Point MT FNPTMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-887 4 Finley Point MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2023-12-16   
406-887 5 Finley Point MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-02-27   
406-887 6 Finley Point MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-887 7 Finley Point MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-887 8 Finley Point MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-887 9 Finley Point MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-888 A West Glacier MT WGLCMTMARS1  9636 QWEST CORPORATION 648      
406-888 0 West Glacier MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-888 1 West Glacier MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-24   
406-888 2 West Glacier MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-888 3 West Glacier MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-888 4 West Glacier MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-888 5 West Glacier MT WGLCMTMARS1  9636 QWEST CORPORATION 648      
406-888 6 West Glacier MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-04-14   
406-888 7 West Glacier MT WGLCMTMARS1  9636 QWEST CORPORATION 648      
406-888 8 West Glacier MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-07-17   
406-888 9 West Glacier MT WGLCMTMARS1  9636 QWEST CORPORATION 648      
406-889 A Eureka Rural MT ERKRMTXCDS1  2242 INTERBEL TEL. COOP., INC. 648      
406-890 A Kalispell MT KLSLMTAZ1MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-890 0 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-06-08   
406-890 1 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-08-24   
406-890 2 Kalispell MT KLSLMTAZ1MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2007-03-03   
406-890 3 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-10-12   
406-890 4 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-11-09   
406-890 5 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-02-09   
406-890 6 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-12   
406-890 7 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2010-04-03   
406-890 8 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-05-03   
406-890 9 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-09-04   
406-891 A Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-891 0 Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-891 1 Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-891 4 Baker MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2024-07-12   
406-892 A Columbia Falls MT CLFLMTXCRS0  2249 CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK 648      
406-893 A Peerless MT PRLSMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-893 4 Peerless MT PRLSMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-893 7 Peerless MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-894 A Billings MT BLNGMT934MD  939H COMMIO, LLC 650      
406-894 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2017-09-27   
406-894 1 Billings MT BLNGMT934MD  939H COMMIO, LLC 650   2022-09-11   
406-894 2 Billings MT BLNGMT93HMD  792K CHARTER IP ENABLED SERVICES, LLC 650   2014-09-30   
406-894 3 Billings MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2022-09-04   
406-894 4 Billings MT BLNGMT934MD  939H COMMIO, LLC 650   2019-10-27   
406-894 5 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2024-03-23   
406-894 6 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2024-03-23   
406-894 7 Billings MT BLNGMT30RS0  7830 MID-RIVERS TELEPHONE COOPERATIVE, INC. 650   2019-02-28   
406-894 8 Billings MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2022-07-04   
406-894 9 Billings MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2021-05-23   
406-895 A Outlook MT OTLKMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-895 2 Outlook MT OTLKMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-895 7 Outlook MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-896 A Billings MT BLNGMTMADS1  9636 QWEST CORPORATION 650      
406-897 A Columbia Falls MT KLSLMTAZ1MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-897 0 Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2021-11-18   
406-897 1 Columbia Falls MT PLSNMTPC1MD  986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2023-01-20   
406-897 2 Columbia Falls MT KLSLMTAZ1MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-04-21   
406-897 3 Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2014-02-07   
406-897 4 Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-09-30   
406-897 5 Columbia Falls MT KLSLMTAZ1MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2015-11-12   
406-897 6 Columbia Falls MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-897 7 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-09   
406-897 8 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-07-17   
406-897 9 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2015-12-10   
406-898 A Bozeman MT BZMNMTEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 650      
406-898 0 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-898 1 Bozeman MT BZMNMTEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 650   2009-05-22   
406-898 2 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.