SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 40,000 domains across the .ru, .su, and .рф zones. The service enables customers to buy domains online with immediate transfer of administrative rights or rent them by assigning their own DNS servers. Rental agreements include a priority right to purchase the domain at a price fixed in the contract, and can run for up to 50 months.

Customers can browse the full catalog, download a domain list, or use advanced search to find names by keywords and other criteria. Listings provide purchase and monthly rental prices, along with details such as domain age and indicators of search visibility. Buyers interested in negotiating can contact the marketplace through its inquiry form, while assistance and online chat are available in the help section. SITE.su serves businesses and project owners seeking a domain for an online presence, offering both immediate acquisition and a flexible rental option with a path to ownership.