SITE.su is an online marketplace specializing in premium domain names for businesses, websites, and other digital projects. The store offers a large selection of keyword-based domains in the .ru, .su, and .рф zones, with listings available for both purchase and rental. Customers can buy eligible domains online, with transfer of domain administration rights, or rent them by assigning their own DNS servers. Rental agreements include a priority right to purchase the domain, with the buyout price fixed in the contract; agreements may run for up to 50 months.

The marketplace provides tools to browse the full domain catalogue, search by keywords or other criteria, and download domain listings in Excel, including available SEO-related indicators. Visitors can view purchase and monthly rental prices, domain age, and rating information, or contact the store to ask a question or propose a price. Help, contact details, and online chat are available through the site. SITE.su presents domain acquisition and rental options for customers seeking an address for an online presence.