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 enables customers to browse, search, and purchase or rent domains, including keyword-based names and Cyrillic alternatives. Listings provide details such as purchase and monthly rental prices, domain age, and search-related indicators. Customers can explore the full catalogue, download a domain list, or use advanced search tools to find names by relevant terms.

Purchases are completed online with immediate transfer of domain administration rights. Rental is offered by the month and allows the customer to set the domain’s name servers. Rental agreements include a priority right to buy the domain during the contract period, with the purchase price fixed in the agreement; contracts may run for up to 50 months. SITE.su also provides a contact and online chat section, and users can ask questions or submit an offer for a listed domain.