SITE.su is an online marketplace specializing in premium domain names, including keyword-focused domains and websites. Its catalogue features around 40,000 names across the .ru, .su and .рф domain zones, giving businesses and project owners options for establishing a distinctive online identity. Customers can purchase a domain or rent it, with listings displaying prices and other information to support comparison.

Purchases are completed online, with domain administration rights transferred immediately. Rental gives customers the right to assign their own DNS servers, and the rental agreement includes priority rights to buy the domain during the contract period at a price fixed in advance. Contracts can run for up to 50 months. The site also provides domain search tools, a downloadable full catalogue in Excel, and options to ask questions or propose a price. Contact information and online chat are available through its help section. SITE.su is designed to make browsing, evaluating, purchasing and renting domain names straightforward for customers seeking a suitable web address.