SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains listed across the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable, keyword-based web addresses for websites and online projects. Customers can browse the full domain catalog, search by words or other criteria, and download a complete listing with available domain information.

SITE.su offers both outright purchases and monthly rentals. Purchases are completed online with immediate domain transfer, while rentals allow customers to use a domain by assigning their own DNS servers. The marketplace also offers rental agreements with a guaranteed right to buy, and visitors can contact the seller to ask questions or propose a price. Listings display purchase and rental prices, alongside details such as domain age and available traffic or search metrics. Support, contact information, and online chat are available through the help section. Overall, SITE.su provides a searchable, self-service platform for acquiring or renting domain names, with options for both immediate ownership and more flexible use.