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 keywords or other parameters, view domain details, and download the full inventory with SEO-related data. The marketplace supports both outright purchases and monthly rentals, with listed prices and information such as domain age and search-performance indicators.

A purchase transfers domain administration rights online. Rental gives the customer the ability to set the domain’s name servers, with a contract that includes priority rights to buy the domain during the rental term and fixes the purchase price. Rental agreements may last up to 50 months. Customers can contact the marketplace through its help section or online chat to ask questions or propose a price. The site also provides articles and overviews about domain selection and ownership. SITE.su presents its service as a way for individuals and businesses to find domain names for websites and online projects, with options designed to make acquiring or using a domain flexible.