SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 40,000 domains across the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable, keyword-focused web addresses for websites and projects. Customers can purchase a domain online for immediate transfer or rent one by assigning their own DNS servers. Rental options include a guaranteed right to buy, offering a way to use a domain before committing to ownership.

The marketplace provides tools to browse the full catalog, search by keywords or multiple topics, and filter results through advanced search. Visitors can also download a complete domain list, with available metrics such as age and ratings. Listings show purchase prices and monthly rental rates, and users can contact the seller to ask questions or propose a different price. Support is available through the Help section and online chat. SITE.su presents domain selection and acquisition as a straightforward process, with online registration and sign-in for customers ready to proceed.