SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains in the .ru, .su, and .рф zones. The service helps individuals and businesses find and secure domain names for websites, brands, and personal projects. Visitors can browse the full inventory, search by keywords or other parameters, and explore related names, including translated terms, transliterations, and synonyms.

Domains are available for immediate online purchase or monthly rental. The marketplace also offers rental with a guaranteed right to buy, providing an option to use a domain before purchasing it. According to the site, purchases are completed online with immediate domain transfer, while rentals are arranged by assigning the customer’s DNS servers. Listings display purchase and rental prices, and some include details such as domain age and search-related metrics.

Customers can submit an offer or ask a question about a specific domain, with contact options and online chat available through the help section.