SITE.su is an online marketplace specializing in premium domain names, with a catalogue of more than 40,000 options across the .ru, .su and .рф zones. The service helps businesses and individuals find memorable, keyword-focused domains for websites and online projects. Customers can purchase a domain or rent it, with online transactions designed for immediate processing. A purchase transfers the domain’s administration rights, while renting lets the customer assign their own name servers. Rental agreements include priority rights to buy the domain during the rental period, with the purchase price fixed in the contract; agreements can run for up to 50 months.

The marketplace offers tools to browse the full domain list, search by words or other parameters, and download listings for review. Domain records may include age, pricing and indicators of search interest or SEO appeal. Customers can contact the service with questions or price offers through its help section and online chat.