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 is designed for businesses and individuals seeking a memorable web address for a website, business, or personal project. Customers can browse available domains, search by keyword or other criteria, view a full catalogue, and download domain listings with selected metrics.

Domains are available for immediate purchase or rental. Purchases are completed online, with domain administration rights transferred immediately. Rental lets customers use a domain by assigning their own DNS servers, with monthly pricing and a contract that provides a priority right to buy the domain during the rental term. The purchase price is fixed in that agreement, and rental contracts can run for up to 50 months.

The marketplace displays prices, domain age, and indicators of search popularity and SEO appeal to help customers compare listings. Buyers and prospective renters can also contact the team to ask questions or propose a price.