SITE.su is an online marketplace specializing in premium domain names, offering more than 40,000 domains across the .ru, .su, and .рф zones. Customers can browse names, search by keywords or other parameters, view a full domain list, and download listings in Excel. The catalogue includes Russian-language names, transliterations, and domains related to a wide range of search terms.

The service supports both outright purchases and rentals. Domain purchases can be completed online with immediate transfer, while rentals are arranged by assigning the customer’s DNS servers; rental agreements may also include a guaranteed right to buy the domain. Prices and available options are displayed alongside individual listings, and customers can submit questions or make an offer through the site. SITE.su also provides account access, help, contact information, and online chat. Its listings may include details such as domain age and rating, as well as search statistics. The marketplace is designed for individuals and businesses seeking a domain for a website or online project, with both short-term access and full ownership available.