SITE.su is an online marketplace for premium domain names, offering a catalog of more than 40,000 domains across the .ru, .su, and .рф extensions. Customers can browse names by keyword, synonyms, or other search parameters, view available options, and download the full domain list for review. The marketplace supports both immediate online purchases, with instant domain transfer, and rentals, which are arranged by assigning the customer’s DNS servers. Rental agreements include a guaranteed right to buy the domain, giving businesses and online project owners a way to use a suitable web address before committing to a purchase.

Listings show prices in rubles, along with information such as domain age and selected traffic or search metrics. Shoppers can place a domain in the purchase or rental cart, sign in to manage their account, or contact the site to ask a question or propose a price. Help resources and online chat are available through the support section.