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: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-550 A Missoula MT MSSLMTXC6MD  732J NUSO, LLC 648      
406-550 0 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-550 1 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-550 2 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-550 3 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-550 4 Missoula MT MSSLMTXC6MD  732J NUSO, LLC 648   2023-04-11   
406-550 5 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2022-03-25   
406-550 6 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-10-16   
406-550 7 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-10-16   
406-550 8 Missoula MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-02-24   
406-550 9 Missoula MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-02-24   

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

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