SITE.su is an online marketplace specializing in premium domain names, offering more than 40,000 domains for purchase or rental. Its listings cover the .ru, .su, and .рф extensions and include keyword-based names, with search tools to browse by terms or other parameters. Customers can view domain details, download a complete catalog in Excel, and review available information such as age and search-related statistics.

The marketplace supports immediate online purchases, with domains transferred after payment, as well as monthly rentals arranged by assigning the customer’s DNS servers. Some rental offers include a guaranteed right to buy the domain later. Listings display prices for both options, and customers can contact the seller to ask questions or propose a different price. SITE.su also provides account registration, sign-in, and assistance through its Help section, which includes contact information and online chat. The service is designed for businesses and individuals seeking a domain for a website, project, or online presence, with options to buy outright or rent before making a longer-term commitment.