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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
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   
406-898 3 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-898 4 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-898 5 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-898 6 Bozeman MT BLNGMT93AMD  478J NUSO, LLC 650   2024-01-08   
406-898 7 Bozeman MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-02-25   
406-898 8 Bozeman MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-09-17   
406-898 9 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-899 A Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-900 A Ennis MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-900 0 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 1 Ennis MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2017-11-20   
406-900 2 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 4 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 7 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 8 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 9 Ennis MT   509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-901 A Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650      
406-901 0 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-01-14   
406-901 1 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-01-14   
406-901 2 Billings MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2021-07-23   
406-901 3 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-01-14   
406-901 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-02-09   
406-901 5 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2021-11-17   
406-901 6 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2021-11-17   
406-901 7 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2021-11-17   
406-901 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2021-11-17   
406-901 9 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-06-14   
406-902 A Sheridan MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-902 1 Sheridan MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2019-01-18   
406-902 9 Sheridan MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2022-03-19   
406-905 A Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-905 0 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-905 1 Joliet MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-04-27   
406-905 2 Joliet MT BLNGMTMATMD  935G TRI TEL, INC. - MT 650   2013-01-28   
406-905 3 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-905 4 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-905 5 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-905 6 Joliet MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2024-03-22   
406-905 7 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-11-28   
406-905 8 Joliet MT BLNGMT933MD  073H TELNYX LLC 650   2018-07-25   
406-905 9 Joliet MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-02-12   
406-909 A Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-909 0 Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2018-07-08   
406-909 1 Columbia Falls MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-07   
406-909 2 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-909 3 Columbia Falls MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2019-01-28   
406-909 4 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-909 5 Columbia Falls MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-24   

<< 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 >>

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.