Reference Data Rate Center Directory ST MARY, MT Rate Center ST MARY — MT Data last updated: March 10, 2026 LATA 648 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 48.74417740702919, -113.4301288027488 Area Codes 406 Top Carriers Carrier OCN NXX Count QWEST CORPORATION 9636 1
