SITE.su is an online marketplace specializing in premium domain names, with more than 39,000 listings across the .ru, .su, and .рф domain zones. The store helps businesses, entrepreneurs, and other project owners find memorable, keyword-focused web addresses suited to their needs. Customers can purchase a domain online for immediate transfer or rent it by assigning their own DNS servers. Rental plans include a guaranteed right to buy the domain, offering a flexible way to use a name before committing to ownership.

The marketplace provides instant purchase and rental options, along with search tools for finding domains by keyword, translation, transliteration, or other criteria. Visitors can browse or download the full domain list, which includes details such as prices, age, and listed ratings. A shopping cart supports transactions, while the help section offers contact details and online chat. Customers can also ask questions about a specific domain or submit a price proposal.