SITE.su is an online marketplace specializing in domain names, offering a catalog of more than 40,000 domains for businesses, personal projects, and other online ventures. Its listings include names in the .ru, .su, and .рф zones, including keyword-based domains and related alternatives. Customers can browse available names, use expanded search options, view a complete listing, or download domain data in Excel format.

The marketplace provides both domain purchases and rentals. A purchase is completed online with immediate transfer of domain administration rights. Rental gives customers the ability to assign their own DNS servers, with contracts offering a priority right to buy the domain during the rental term and a purchase price fixed in the agreement. The stated maximum rental contract term is 50 months. SITE.su displays pricing and information such as domain age and search-related ratings to help customers compare options. Visitors can also ask questions or propose a price through the site’s contact form, with support and online chat available in its help section.