SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains, including keyword-based names in the .ru, .su, and .рф zones. The service enables customers to browse listings, search by words or other parameters, review domain details, and download the full catalogue as an Excel file. Domains are available for immediate purchase or monthly rental, with online transactions designed to provide a straightforward way to secure a name.

When a domain is purchased, administrative rights are transferred online. Rental allows the customer to assign their own DNS servers and includes a contractual priority right to buy the domain during the rental period; the purchase price is fixed in the agreement, and rental contracts can last up to 50 months. Listings show prices and may include domain age and search-related indicators. Customers can submit questions or price offers, while help and online chat are available through the site’s support section.