SITE.su is an online marketplace specializing in premium domain names, with more than 39,000 listings across the .ru, .su, and .рф extensions. Customers can browse domains for purchase or rent, including keyword-focused names and existing websites. The platform offers instant online purchasing with immediate domain transfer, as well as rental by assigning the customer’s DNS servers. Rental agreements can include a guaranteed right to buy the domain later.

Visitors can search by one or more terms, explore related and transliterated domain suggestions, use advanced search filters, or download the full domain catalogue as an Excel file. Listings provide information such as purchase and monthly rental prices, domain age, and available rating or search statistics. For a specific listing, customers can contact the marketplace to ask questions or propose a price. SITE.su also provides a help section with contact details and online chat, alongside account registration and sign-in options. Its service is designed to help businesses and individuals find and secure domain names for websites, brands, and other online projects.