Reference Data Rate Center Directory WCAMPCROOK, MT Rate Center WCAMPCROOK — MT Data last updated: March 10, 2026 LATA 640 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 45.55246336163613, -104.0425117738142 Area Codes 406 Top Carriers Carrier OCN NXX Count WEST RIVER COOPERATIVE TELEPHONE COMPANY 1689 1