SITE.su is an online marketplace for premium domain names, offering a catalogue of more than 40,000 domains across the .ru, .su and .рф zones. The service helps businesses and individuals find names suited to their projects, with listings that include keyword domains and related alternatives. Customers can browse the full catalogue, use advanced search to filter options, or download a complete domain list in Excel format.

Domains are available for immediate online purchase or rental. A purchase is completed with instant domain transfer, while renting involves assigning the customer’s DNS servers; some rental arrangements include a guaranteed right to buy. Listings display purchase and monthly rental prices, and may also provide information such as domain age, ratings and search statistics. Interested buyers can contact the marketplace to ask questions or propose a price, with email and telephone details requested for inquiries. SITE.su also provides help and online chat through its support section, as well as account registration and sign-in for customers.