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: 649

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-649 A St Regis MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-649 0 St Regis MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-649 2 St Regis MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-649 7 St Regis MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-649 9 St Regis MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      

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

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