SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 40,000 domains in the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable, keyword-focused web addresses for websites and online projects. Customers can purchase a domain through an online transaction, with administration rights transferred immediately, or rent one by assigning their own DNS servers. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price fixed in the contract; agreements can last up to 50 months.

The marketplace offers domain search by words and other parameters, along with full catalog browsing and downloadable domain lists. Listings display purchase and monthly rental prices, and may include information such as domain age and search-related indicators. Customers can ask questions or propose a price for a domain, with contact options and online chat available through the help section. SITE.su presents a practical way to explore, compare, rent, or acquire domain names for an online presence.