SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains, primarily in the .ru, .su and .рф zones. The service helps businesses and individuals find an online address through keyword-based listings and search tools, including filters and options to browse or download the full domain catalogue.

Customers can purchase available domains online, with immediate transfer, or rent them by assigning their own DNS servers. Rental agreements include a guaranteed right to buy the domain, giving users a way to secure a name before committing to a purchase. The site displays purchase prices and monthly rental rates, and some listings include details such as domain age and search or rating statistics.

For buyers who want to negotiate, SITE.su provides a question and price-offer form, along with contact information and online chat through its help section. The marketplace is designed to make comparing, selecting and acquiring domain names straightforward, whether users are building a business website, developing a project or seeking a distinctive web address.