SITE.su is an online marketplace specializing in premium domain names, with more than 39,000 domains available across the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable, keyword-focused web addresses and offers both immediate purchase and monthly rental options. Buyers can complete transactions online, with domain administration rights transferred after purchase. Rental lets customers use a domain by assigning their own name servers, and agreements include a priority right to buy at a price fixed in the contract. Rental terms can last up to 50 months.

The marketplace provides domain search tools, including expanded search, lists of matching and related names, and downloadable spreadsheets with domain information. Listings show purchase and rental prices, alongside details such as domain age and search-related ratings. Customers can ask questions or propose a price through the site, with contact options and online chat available in the Help section. SITE.su presents domain names as a practical resource for establishing or developing an online presence, while giving customers a choice between acquiring a domain outright and renting it with a path to ownership.