Universal Space Network
Universal Space Network, Inc., or USN is an American company specializing in tracking, telemetry, and control of spacecraft. It is a subsidiary of Swedish Space Corporation, with four main sites and cooperative agreements with many others.
USN has been used by commercial satellite operations such as Sirius XM Radio and scientific missions both in low earth orbit and in orbit around the moon. USN has offered a 50% discount for their services for competitors for the Google Lunar X Prize.
