SITE.su is an online marketplace specializing in premium domain names for businesses and individuals. Its catalog offers more than 40,000 domains, including keyword-based names in the .ru, .su, and .рф zones. Customers can browse listings, search by words or other criteria, view related name suggestions, and download a full domain list.

The marketplace supports both outright purchases and monthly rentals. A purchase is completed online with an immediate transfer of domain administration rights. Renting allows customers to assign their own DNS servers and includes a priority right to buy the domain during the rental agreement; the purchase price is fixed in the contract. Rental agreements can last up to 50 months. Listings display prices and may also include domain age and indicators based on search data. Prospective buyers can contact the marketplace to ask questions or propose a price, while account access, assistance, and online chat are available through the site. SITE.su presents domain acquisition and rental as flexible options for establishing or developing an online presence.