SITE.su is an online marketplace specializing in premium domain names, with a catalogue of around 40,000 domains, primarily in the .ru, .su, and .рф zones. The service enables customers to browse listings, search by words or other parameters, and purchase or rent a domain online. Purchases are processed with immediate transfer of domain administration rights. For rentals, customers can assign their own DNS servers and receive a priority right to buy the domain during the rental agreement; the buyout price is fixed in the contract. Rental terms can last up to 50 months, with prices shown per calendar month.

The marketplace provides tools to view the full domain catalogue, download listings, and compare details such as asking prices, domain age, and search-related indicators. Customers can also contact the seller about a specific domain or propose a different price through the site’s inquiry form. SITE.su offers online purchasing and rental options for individuals and businesses seeking a domain name for a website, project, or brand.