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: 826

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-826 A Plains MT PLNSMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 0 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 1 Plains MT   986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2013-08-25   
406-826 2 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 3 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 4 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 5 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 6 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 7 Plains MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-826 8 Plains MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-27   
406-826 9 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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