SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains, primarily in the .ru, .su, and .рф zones. The platform serves businesses, entrepreneurs, and individuals seeking a web address for a new project or an established online presence. Customers can purchase domains through an online process with immediate transfer or rent them by assigning their own DNS servers. Rental options include a guaranteed right to buy, giving customers a way to use a domain before committing to ownership.

The marketplace supports instant purchase and rental through its listings, as well as inquiries and price offers for customers who wish to negotiate. Search tools help users find domains by words, topics, parameters, translations, and synonyms. SITE.su also provides a complete domain list for browsing or download, including spreadsheet exports with available metrics. A help section offers contact information and online chat, while account registration enables customers to access the platform’s services. Its listings display prices, rental rates, domain age, and selected search and ranking indicators.