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: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-410 A Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-410 0 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-410 1 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-410 2 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2022-12-10   
406-410 3 Helena MT HLNAMTMAWMD  6529 T-MOBILE USA, INC. 648   2021-06-04   
406-410 4 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-10-29   
406-410 5 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-07   
406-410 6 Helena MT HLNAMTMAWMD  6529 T-MOBILE USA, INC. 648   2023-01-06   
406-410 7 Helena MT HLNAMTMAWMD  6529 T-MOBILE USA, INC. 648   2023-01-06   
406-410 8 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-08-24   
406-410 9 Helena MT   939H COMMIO, LLC 648   2023-08-17   

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

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