SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains in the .ru, .su, and .рф zones. Customers can browse available names, search by keyword or other parameters, review domain details, and download the full inventory as an Excel file. The marketplace supports both immediate purchases and rentals, with online transactions designed for prompt domain transfer or setup.

Purchasing a domain transfers its administration rights to the buyer. Rental is priced by the calendar month and allows the customer to set the domain’s name-server addresses. 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 site also provides domain information such as age and search-related metrics, alongside help, contact options, and an online chat. Customers interested in negotiating can submit a question or offer a price for an individual domain.