SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 listings across the .ru, .su, and .рф zones. The service enables customers to purchase domains online with immediate transfer of administrative rights or rent them by setting their own DNS servers. Rental agreements include a guaranteed priority right to buy the domain during the rental term, with the purchase price fixed in the contract; agreements can run for up to 50 months.

The marketplace offers search tools to find domains by keywords, spelling, translation, transliteration, and other parameters. Customers can view listings, download the domain catalogue as an Excel file, and contact the team through a help section or online chat to ask questions or propose a price. Listings include purchase and monthly rental prices, alongside information such as domain age and SEO-related indicators. SITE.su presents its inventory for businesses and individuals seeking domain names for websites, online projects, or brand development, with options for immediate acquisition or a more flexible rental arrangement.