SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains offered across the .ru, .su, and .рф zones. The service helps businesses and individuals find domain names for websites, brands, and online projects, including keyword-based options and names related to particular search terms. Customers can browse listings, search by words or other parameters, view a complete domain catalogue, or download a list for review.

SITE.su offers two ways to obtain a domain: immediate online purchase and monthly rental. Purchases are described as involving instant domain transfer, while rental is arranged by assigning the customer’s DNS servers; some rental listings also include a guaranteed right to buy the domain. The marketplace displays prices and, for many listings, information such as domain age and search-related metrics. Buyers can submit questions or propose a price through the site, with contact options and online chat available in the Help section. The service is designed to make domain selection and acquisition straightforward for Russian-language online projects.