Reference Data Rate Center Directory DUPUYER, MT Rate Center DUPUYER — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 48.19288023818, -112.498841168421 Area Codes 406 Top Carriers Carrier OCN NXX Count 3 RIVERS TEL. COOP., INC. 2255 1
