Reference Data Rate Center Directory AUGUSTA, MT Rate Center AUGUSTA — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 47.49313648467542, -112.3933636936703 Area Codes 406 Top Carriers Carrier OCN NXX Count 3 RIVERS TEL. COOP., INC. 2255 1
