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: 525

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-525 A South Wolf Point MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-525 2 South Wolf Point MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-525 3 South Wolf Point MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-525 5 South Wolf Point MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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