SITE.su is an online marketplace specializing in premium domain names. Its catalog features tens of thousands of domains, including keyword-focused names in the .ru, .su and .рф zones. Customers can browse available listings, search by terms or other parameters, and review details such as price, domain age and indicators related to search visibility.

The marketplace offers two ways to obtain a domain: purchase or rental. Purchases can be completed online, with domain administration rights transferred immediately. Rental is priced by the calendar month and allows the customer to use their own DNS servers. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price set in the contract; agreements may last up to 50 months.

SITE.su also provides tools to view or download the full domain list, submit questions or price offers, and contact support through its Help section and online chat. The service is designed for businesses and individuals seeking a domain for a website, online brand or personal project.