SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф zones. The service helps individuals and businesses find domain names for websites and online projects, including names built around keywords and specific themes. Customers can browse the full inventory, search by terms or parameters, review domain details, and download listings in Excel format.

Domains can be purchased online with immediate transfer of administration rights or rented by assigning the customer’s DNS servers. Rental is charged monthly and includes a contractual priority right to buy the domain during the rental term, with the purchase price fixed in the agreement. Rental contracts can run for up to 50 months. The marketplace displays prices and, for listed domains, information such as age and search-related ratings. Customers may also ask questions or propose a price through the site, with assistance and online chat available in the Help section.