SITE.su is an online marketplace specializing in premium domain names, with more than 39,000 listings across the .ru, .su and .рф zones. The service enables individuals and businesses to buy a domain or rent one for a monthly fee, with online purchasing and immediate transfer of domain administration rights. Rental gives customers the right to change the domain’s name-server settings and includes a contractual priority right to purchase the domain during the rental period; the buyout price is fixed in the agreement.

Customers can browse the full catalogue, download a domain list with indicators such as tIC and PR, or use advanced search to find names by keywords, translations and transliterations. Listings show purchase and rental prices, and may also include domain age and search-related metrics. Buyers can purchase directly through the site, while those who want to negotiate or propose a different price can contact the seller through a question form. SITE.su also provides registration, account access, help and online chat, with contact options available in its help section.