SITE.su is an online marketplace specializing in premium domain names, offering around 40,000 domains for purchase or rent. Its listings focus on keyword-rich names in the .ru, .su and .рф extensions, with options for instant online purchase and domain transfer. Customers can also rent a domain by assigning their own DNS servers. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price set in the contract; agreements may last up to 50 months.

The marketplace provides tools to browse the full domain catalogue, download listings in Excel, and search by keywords or other parameters. Listings may include purchase and monthly rental prices, domain age, and SEO-related indicators based on Yandex Wordstat and Google and Yandex data. Customers can contact the team through the Help section and online chat, ask questions about a specific domain, or propose a price. SITE.su serves businesses and individuals seeking domain names for websites, projects, or brands.