SITE.su is an online marketplace for premium domain names, offering a catalog of more than 40,000 domains in the .ru, .su, and .рф zones. Customers can browse available names, search by keywords or other parameters, and view listings with purchase and monthly rental prices, along with details such as domain age and search-related indicators.

The marketplace supports both immediate online purchases and domain rentals. A purchase transfers the domain’s administration rights, while rental allows the customer to use the domain by setting their own DNS servers. Rental agreements include a priority right to buy the domain during the agreement period, with the purchase price fixed in the contract; agreements can last up to 50 months. The site also provides options to request information or propose a price, download the full domain list as an Excel file, and contact the team through its help section and online chat. SITE.su presents its service as a convenient way for businesses and individual projects to find and secure a suitable domain name.