Tongasat is the licensed agent of the Kingdom of Tonga responsible for making and coordinating Tonga's satellite filings to the International Telecommunication Union and then licensing those satellite filings to international satellite operators for their commercial use, in effect a flag of convenience for space. Tonga was the sixth-largest claimant of orbital slots due to Tongasat's efforts.[1] In 2002, Tongasat launched the Esiafi 1 satellite; as of 2015, a satellite in its spot was still in operation.