SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 40,000 domains across the .ru, .su, and .рф zones. The service enables customers to buy domains or rent them through an online process, with instant purchasing and transfer of domain administration rights. Rental is arranged by assigning the customer’s DNS servers and includes a contractual priority right to purchase the domain during the rental term; the buyout price is set in the agreement. Rental periods are priced monthly, and contracts may run for up to 50 months.

The marketplace provides domain search by keywords and parameters, listings of transliterated name options, and downloadable catalog files, including spreadsheets with domain metrics. Customers can submit questions or price offers, with contact support and online chat available through the Help section. Listings may show purchase and rental prices, domain age, and a rating based on search and keyword data. SITE.su presents itself as a resource for individuals and businesses seeking memorable domain names for their online projects.