Reference Data Rate Center Directory CUSTER, MT Rate Center CUSTER — MT Data last updated: March 10, 2026 LATA 650 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 46.12826929070579, -107.5542201830556 Area Codes 406 Top Carriers Carrier OCN NXX Count MID-RIVERS TEL. COOP., INC. 2246 1
