SITE.su is an online marketplace specializing in premium domain names, with more than 39,000 listings across the .ru, .su, and .рф zones. The service enables customers to purchase domains or rent them by the month, with online transactions and immediate transfer of administration rights for completed purchases. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price set in the contract; rental is provided through the ability to change the domain’s name server settings.

The marketplace offers domain search by keywords and parameters, including names written in transliteration and related terms. Customers can browse or download the full domain list, review listing details such as age and SEO-related ratings, and submit questions or price offers. The site also provides help, contact information, and online chat. Its catalog displays individual sale and monthly rental prices, while some domains are available at a negotiable price.