SITE.su is an online marketplace specializing in premium domain names, including keyword-based domains and existing websites in the .ru, .su, and .рф zones. The store offers more than 40,000 domains for purchase or lease, with listings that display pricing and, for some names, age and search-related indicators. Customers can browse the full catalogue, search by one or more terms, use advanced filters, or download a domain list in Excel format.

Purchases are completed online, with the domain transferred immediately by changing its administrative rights. Leasing is available at a monthly price and works by assigning the customer’s DNS servers. Lease agreements provide a priority right to buy the domain during the rental period, with the purchase price fixed in the contract; agreements can run for up to 50 months. Visitors can also ask questions about a specific domain or propose a price. SITE.su provides help and online chat through its support section, as well as account registration and sign-in for customers.