Reference Data Rate Center Directory HOPPILLIAD, MT Rate Center HOPPILLIAD — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 47.93298714381299, -109.881680895355 Area Codes 406 Top Carriers Carrier OCN NXX Count TRIANGLE TEL. COOP. ASSN., INC. 2257 1
