Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-521 A Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-521 0 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-521 1 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-521 2 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-01-17   
406-521 3 Townsend MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2017-08-07   
406-521 4 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-521 5 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-06-21   
406-521 6 Townsend MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-521 7 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-10-24   
406-521 8 Townsend MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-521 9 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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