Reference Data Rate Center Directory ALTA, MT Rate Center ALTA — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 45.61953355888569, -114.3007390286954 Area Codes 406 Top Carriers Carrier OCN NXX Count BLACKFOOT TEL. COOP., INC. 2235 1
