Local Calling Guide

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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
406-501 2 Whitehall MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-10-31   
406-501 3 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-11-08   
406-501 4 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-20   
406-501 5 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-20   
406-501 6 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-01-03   
406-501 7 Whitehall MT MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2020-08-24   
406-501 8 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-501 9 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-502 A Helena MT HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648      
406-502 1 Helena MT HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2012-06-01   
406-502 2 Helena MT HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2014-04-30   
406-502 8 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-13   
406-502 9 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-13   
406-503 A Billings MT BLNGMTWELMD  318J COMCAST IP PHONE, LLC 650      
406-503 0 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-503 1 Billings MT BLNGMTWELMD  318J COMCAST IP PHONE, LLC 650   2023-06-04   
406-503 2 Billings MT   6529 T-MOBILE USA, INC. 650   2024-01-26   
406-503 3 Billings MT   453F ONVOY, LLC - MT 650   2024-02-09   
406-503 4 Billings MT BLNGMTMAXMD  5562 METROPCS, INC. 650   2023-09-24   
406-503 5 Billings MT   453F ONVOY, LLC - MT 650   2024-02-09   
406-503 6 Billings MT   453F ONVOY, LLC - MT 650   2024-02-09   
406-503 7 Billings MT   453F ONVOY, LLC - MT 650   2024-02-09   
406-503 8 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-503 9 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-504 A Fairfield MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-504 2 Fairfield MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-05-19   
406-505 A Conrad MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-505 0 Conrad MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-28   
406-505 1 Conrad MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-07   
406-505 2 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-505 3 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-505 4 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-505 5 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-28   
406-505 6 Conrad MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-505 7 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-10-21   
406-505 8 Conrad MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-07-18   
406-505 9 Conrad MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-11-14   
406-506 A Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650      
406-506 0 Billings MT BLNGMT93BMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-10-07   
406-506 1 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-11-01   
406-506 2 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-11-01   
406-506 3 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-506 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 5 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 6 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 7 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-506 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-09-03   
406-506 9 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-07-23   
406-507 A Whitefish MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-507 0 Whitefish MT   453F ONVOY, LLC - MT 648   2024-04-14   

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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