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: 722

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-722 A Alberton MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 0 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 1 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 2 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 3 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 4 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 6 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 7 Alberton MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2025-04-28   
406-722 8 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-722 9 Alberton MT   2235 BLACKFOOT TEL. COOP., INC. 648      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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