SITE.su is an online marketplace for premium domain names, offering a catalogue of around 40,000 domains in the .ru, .su and .рф extensions. Customers can browse and search for keyword-based domain names, view listings and compare purchase and monthly rental prices. The site provides tools to search by terms or other parameters, display the full domain catalogue, and download a list of domains with available metrics.

Domains can be purchased online, with administration rights transferred after purchase, or rented by assigning the customer’s name servers. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price set in the agreement; contracts can last up to 50 months. Listings may include domain age and a rating based on search and keyword data. Customers can ask questions or propose a price through the site, and can find contact information and online chat in the Help section. SITE.su serves businesses and individuals seeking a domain for a website or online project.