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 helps businesses, organizations, and individuals find a domain for a website or project, offering both immediate purchase and rental. Buyers can acquire a domain online with an immediate transfer of administrative rights. Rental provides the right to change the domain’s DNS servers and includes a priority option to buy the domain during the rental term, with the purchase price fixed in the agreement. Rental is priced by the calendar month, and agreements can last up to 50 months.

Visitors can search domains by keyword, browse matching names, or use advanced search options. SITE.su also provides downloadable domain lists, including spreadsheet exports, and offers contact support and online chat through its Help section. Listings show prices and may include domain age and search-related indicators. The marketplace presents domain availability and pricing directly, with options to ask a question or propose a price for a specific name.