SITE.su is an online marketplace specializing in premium domain names. Its catalog offers more than 40,000 domains, including keyword-focused names in the .ru, .su, and .рф extensions. Customers can browse listings, search by words or other parameters, view domain statistics, and download the full catalog as an Excel file.

The marketplace provides two ways to obtain a domain. Buyers can purchase online, with administration rights transferred after the transaction. Alternatively, they can rent a domain by arranging for their own DNS servers to be used. Rental agreements include a priority right to buy the domain, with the purchase price fixed in the contract; agreements can last up to 50 months. Prices and monthly rental rates are displayed for individual listings, and customers can contact the seller to ask questions or propose a price. SITE.su also provides a help section, contact information, and online chat. Its service is designed to help businesses and individuals find and secure domain names for websites and online projects.