SITE.su is an online marketplace specializing in domain names, offering a catalog of approximately 40,000 options across the .ru, .su, and .рф zones. Customers can browse domains, search by keywords or other criteria, and review details such as age and search-related indicators to help compare listings. The marketplace supports both immediate purchase and monthly rental, making domain names available to businesses, website operators, and personal projects.

Purchases are completed online, with the domain’s administrative rights transferred to the buyer. For rentals, customers can assign their own DNS servers and receive a priority right to purchase the domain during the rental agreement. The purchase price is fixed in that agreement, and rental terms can last up to 50 months. SITE.su also provides full-list downloads, including spreadsheet exports, and lets customers ask questions or propose a price for a specific domain. Help and online chat are available through the support section. By combining searchable listings with flexible acquisition options, the service helps customers find and secure relevant web addresses.