SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains advertised across the .ru, .su and .рф zones. It helps businesses, entrepreneurs and project owners find web addresses that match their names, keywords or themes. Customers can browse available domains, search by one or more terms, use advanced search options, and view a complete catalogue or download a domain list for review.

The marketplace offers both domain purchases and rentals. Online purchases are described as enabling immediate transfer of the domain, while rental arrangements are activated by assigning the customer’s DNS servers. The site also offers rental with a guaranteed right to buy, giving customers a route from temporary use to ownership. For listed domains, visitors can review prices for purchase and monthly rental, and submit a question or propose a price through the contact form. Help resources, contact details and online chat are available through the site.