SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains across the .ru, .su, and .рф extensions. Customers can browse keyword-focused domains, search by topic or other criteria, view related and synonymous names, and download the full catalog with domain metrics. The marketplace supports both immediate purchase and rental, with prices and information such as domain age and search-related ratings displayed for listings.

Purchases are completed online through a transfer of domain administration rights. For rentals, customers pay a monthly fee and can direct the domain to their own DNS servers. Rental agreements provide 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. SITE.su also offers a contact form for questions or price proposals, along with help resources and online chat. Its catalog includes the featured domain рабыни.рф and related names, as well as domains covering a wide range of keywords and themes.