Technical Center of Internet

The Technical Center of Internet (Russian: Технический центр Интернет, TCI) is a Moscow-based organization founded in 2009 providing technical support of Russian national domains .ru, .рф, and .su. The TCI provides service for the main registration system of national Russian domains, supports the DNS infrastructure of the Russian segment of the internet, deals with the registrars accredited in the Russian national domains.

Source: Wikipedia — Technical Center of Internet (CC BY-SA 4.0)