Reference Data Rate Center Directory POTOMAC, MT Rate Center POTOMAC — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 46.88161867345688, -113.5794887951999 Area Codes 406 Top Carriers Carrier OCN NXX Count BLACKFOOT TEL. COOP., INC. 2235 1
