SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 39,000 domains in the .ru, .su, and .рф zones. The service helps businesses and individuals find a distinctive web address for a brand, company, or personal project. Customers can purchase domains online with immediate transfer or rent them by assigning their own DNS servers. Rental options include a guaranteed right to buy, offering a route to ownership after leasing.

The marketplace provides tools to browse the full domain list, search by keyword or other parameters, and download listings in Excel. Domain pages display purchase and monthly rental prices, alongside available information such as age, ratings, and search statistics. Buyers can use a shopping cart for immediate transactions or contact the team to ask questions and propose a price. Help, contact details, and online chat are available through the site. With both Cyrillic and Latin-script names on offer, SITE.su provides flexible options for finding a domain suited to a particular audience or business.