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 individuals and businesses find keyword-focused domain names and offers both immediate purchase and monthly rental options. Buyers can complete purchases online, with domain administration rights transferred immediately. For rentals, customers assign their own DNS servers; rental agreements provide priority rights to buy the domain during the contract and set its purchase price in advance. Rental periods can last up to 50 months.

The marketplace provides tools to browse the full domain catalogue, search by keywords or other parameters, and download a complete domain list in Excel format. Listings display purchase and rental prices, and may include domain age and search-related indicators. Customers can contact the team through the Help section or online chat, ask questions about a domain, or propose a price. SITE.su serves as a practical resource for organizations and entrepreneurs seeking a relevant online address without limiting them to domain registration alone.