SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable web addresses for websites, brands, and personal projects. Customers can purchase a domain online, with administration rights transferred immediately, or rent one by using their own DNS servers. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price fixed in the contract; rentals are available for up to 50 months.

The marketplace offers instant purchase and rental options, an extended search for finding domains by criteria, and downloadable listings in Excel. Domain pages display prices, registration age, and search-related indicators to help visitors compare options. Customers can also contact the team through the help section or online chat, ask questions about a specific domain, or submit a price offer. SITE.su presents domain names as flexible assets for establishing a distinctive online presence, whether customers prefer to buy outright or secure a name through rental.