SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains for purchase or rental. Its listings focus on keyword-based domains in the .ru, .su, and .рф extensions, with options available for immediate online purchase or rental. A purchase transfers administration rights to the buyer, while rental lets customers assign their own DNS servers and includes a contractual priority right to buy the domain at a price fixed in the agreement. Rental is priced by the calendar month, with agreements available for up to 50 months.

Customers can browse the full domain catalog, download listings with SEO-related metrics, and use advanced search to find names by keyword or other parameters. The marketplace displays information such as domain age, prices, and indicators based on Yandex Wordstat and search-engine data to help visitors assess listings. For questions or price offers, customers can contact the seller through the site’s inquiry form; help and online chat are available in the Help section.