SITE.su is an online marketplace specializing in premium domain names, offering a catalog of more than 40,000 domains, including keyword-based names in the .ru, .su and .рф zones. Customers can browse available listings and choose to purchase a domain or rent it, with prices and related details displayed for individual names. Online purchases are designed for immediate transfer, while renting works by assigning the customer’s DNS servers. Some rental arrangements also include a guaranteed right to buy the domain.

The service supports domain discovery through keyword searches, an expanded search option and listings of matching, synonymous or translated names. Visitors can view the full catalog online or download a domain list, with information such as age and ratings provided for listed names. Buyers can add domains to a cart for purchase or rental, and can submit a question or price offer for a specific domain. Help, contact information and online chat are available through the site’s support section.