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 buy domains online or rent them by assigning their own DNS servers. Purchases include the transfer of domain administration rights, while rental agreements provide a priority option to buy the domain during the rental period, with the purchase price set in the contract. Rental is priced by the calendar month, and agreements can run for up to 50 months.

Customers can browse the full domain catalogue, download listings in Excel format and use advanced search to find names by specific terms or criteria. Each listing may include details such as its price, age and search-related indicators. The site also offers an enquiry form for questions or price proposals, alongside contact information and online chat through its Help section. SITE.su presents domain names as available for immediate purchase or rental, helping users find an address for a planned website or online project.