SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains across the .ru, .su, and .рф zones. The service helps businesses, entrepreneurs, and investors find memorable, keyword-focused domain names for websites and online projects. Customers can purchase a domain through an online process, with administration rights transferred immediately, or rent one by assigning their own DNS servers. Rental agreements include a priority right to buy the domain at a price fixed in the contract; rental terms can last up to 50 months.

The marketplace provides domain search tools, including advanced search by parameters, translated-name options, and listings with purchase and monthly rental prices. Visitors can view or download the full domain catalogue, with some listings also showing age and search-related indicators. Customers may contact the team through the Help section or online chat, ask questions about a domain, and propose a price. SITE.su presents domain acquisition and rental as flexible ways to establish or strengthen an online presence.