The Indian Space Research Organisation Telemetry, Tracking and Command Network (ISTRAC) provides mission support to near-earth satellites and launch vehicle missions for the Indian space program (ISRO). ISTRAC has a network of ground stations at Bangalore, Lucknow, Port Blair, Sriharikota, and Thiruvananthapuram. Additionally, ISTRAC has Telemetry, Tracking and Command (TTC) stations at Mauritius, Bearslake (Russia), Biak (Indonesia) and Brunei; and a multi-mission Spacecraft Control Centre is located at Bangalore.
Currently, ISTRAC supports 6 satellites, and operates Local User Terminal/Mission Control Centre (LUT/MCC) under the international Satellite-Aided Search and Rescue Programme.