SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф extensions. The service enables customers to browse, search, and secure domains through either immediate purchase or monthly rental. Purchases are completed online with prompt transfer of domain administration rights. For rentals, customers can assign their own DNS servers and receive a contractual priority right to buy the domain during the rental period, with the purchase price fixed in the agreement. Rental terms can last up to 50 months.

The marketplace offers tools to explore its inventory, including keyword and advanced searches, a full domain list, and downloadable listings with metrics. Domain details may include age, search-related indicators, and pricing for both purchase and rental. Customers can submit questions or price offers through the site, and assistance is available through its Help section and online chat. SITE.su serves individuals and businesses seeking relevant domain names for websites, brands, or online projects.