SITE.su is an online marketplace specializing in premium domain names, with a catalogue of more than 40,000 domains across the .ru, .su, and .рф zones. The service is designed for businesses and individuals seeking distinctive web addresses for websites, brands, or personal projects. Customers can purchase domains online with immediate transfer or rent them by directing the domain’s DNS servers to their chosen hosting. Rental agreements include a guaranteed option to buy, offering a way to use a name before committing to ownership.

The marketplace provides instant purchase and rental options, searchable domain listings, and advanced search tools for finding names by keywords or other criteria. Visitors can view a full catalogue, download domain data in Excel, and review available information such as age, ratings, and search metrics. For individual listings, customers may submit questions or propose a price, and support is available through the Help section and online chat.