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 helps businesses and individuals find and secure domain names, including keyword-based names and Russian-language transliterations. Customers can purchase a domain online, with administration rights transferred immediately, or rent one 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 can last up to 50 months.

The marketplace offers domain search by words and other parameters, complete listings for browsing or download, and information such as price, age and search-related indicators. Buyers can place an order through the site, while those interested in negotiating can submit a question or offer a price. SITE.su also provides a help section with contact details and online chat. Its services are designed to make domain selection, purchase and rental straightforward for people developing websites and online projects.