Reference Data Rate Center Directory PLAINS, MT Rate Center PLAINS — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 47.458586315026, -114.885736643104 Area Codes 406 Top Carriers Carrier OCN NXX Count BLACKFOOT TEL. COOP., INC. 2235 1
