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 store serves individuals and businesses seeking memorable, keyword-focused domains for websites and online projects. Customers can purchase a domain through an online process with immediate transfer, or rent one by assigning their own DNS servers. Rental options may include a guaranteed right to buy the domain later.

The marketplace offers instant purchase and rental, domain search by name or other parameters, and downloadable lists of available domains, including spreadsheets with metrics. Listings display prices and, for many domains, information such as age, ratings, and search statistics. Buyers can browse matching names, names with specified beginnings, and transliterated variations. The site also provides a contact form for questions or price offers, alongside a help section and online chat. With domain choices spanning Russian-language and Latin-script names, SITE.su provides flexible acquisition options for users developing commercial or personal web projects.