SITE.su is an online marketplace specializing in premium domain names. The store offers a large catalog of approximately 40,000 domains, including keyword-based names in the .ru, .su, and .рф zones. Customers can browse available domains, search by words or themes, use advanced search options, and view or download the full catalog, which is also available as an Excel file.

The marketplace supports both domain purchases and rentals. Buyers can complete an online purchase with immediate domain transfer, while rental allows customers to assign their own DNS servers. The site also offers rental with a guaranteed right to buy, providing a path from temporary use to ownership. Listings show purchase and monthly rental prices, and interested customers can submit a question or propose a price through the contact form. Help, contact information, and online chat are available through the site’s Help section. SITE.su presents its service as a way for individuals and businesses to find a memorable web address suited to their chosen topic or market.