SITE.su operates an online marketplace for premium domain names, offering more than 39,000 domains across the .ru, .su, and .рф zones. Customers can browse keyword-based names, search by terms or parameters, and explore related names, synonyms, and transliterations. The catalog includes domains such as perevodki.ru and names connected with translation, alongside options in many other subjects.

The marketplace supports both immediate purchase and rental. Purchases are completed online with prompt domain transfer, while rental works by assigning the customer’s DNS servers and can include a guaranteed right to buy the domain later. Listings show prices in rubles, and some include domain age and rating information. Visitors can view or download the full domain list, including a spreadsheet option with metrics, and contact the marketplace through its help section or online chat. Customers can also ask questions about a specific domain or propose a price using the inquiry form. SITE.su is designed to help individuals and businesses find and secure domain names through flexible purchase and rental arrangements.