SITE.su is an online marketplace specializing in premium domain names, offering more than 40,000 options across the .ru, .su, and .рф zones. The service enables customers to buy domains online or rent them, with rental agreements offering a guaranteed right to purchase. Purchases are completed online with immediate domain transfer, while rental involves assigning the customer’s DNS servers.

The marketplace provides tools to explore its catalogue, including an expanded search, a complete domain list, and a downloadable spreadsheet with domain information. Listings display purchase and monthly rental prices, and may include details such as domain age and search or visibility indicators. Customers can browse names matching particular words, transliterations, translations, or letter patterns, and can contact the seller to ask questions or propose a price. Online chat and contact information are available through the help section. SITE.su presents domain acquisition and rental as flexible options for businesses and projects seeking a suitable web address, with an online cart for transactions and account access for registration and sign-in.