Starfleet's Communications Satellite Tracking, or COMMSATTRAC, was an agency that was based in Starfleet Headquarters in 2294. (TOS novel: The Fearful Summons)

Divisions and agencies of Starfleet
	Academy • Administration • Advanced Starship Design Bureau • Advanced Technologies • Appeals Board • Bureau of Information • Bureau of Standards • Command • Communications • Control • Corps of Engineers • Criminal Investigative Service • Cultural Affairs • Dental • Exploratory Division • Headquarters • Intelligence • Inspector General • Internal Affairs • Judge Advocate General • Marine Corps • Materiel Supply Command • Medical • Mission Operations • Operations • OSHC • Orbital Operations • Research and Development • Sector Guard • Security • Special Security Division • Science • Shipyards Operations • Stellar Imaging • Strategic Command • Tactical • Technology Assessment Directorate • Training Command