Reference Data Rate Center Directory MARTINSDL, MT Rate Center MARTINSDL — MT Data last updated: March 10, 2026 LATA 650 State MT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 46.45780661458394, -110.3141842077558 Area Codes 406 Top Carriers Carrier OCN NXX Count TRIANGLE TEL. COOP. ASSN., INC. 3310 1
