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: 974

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-974 A Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 0 Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 2 Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 3 Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-974 4 Circle MT   145J TERRA NOVA TELECOM INC. 650   2026-01-04   
406-974 6 Circle MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-10-10   
406-974 9 Circle MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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