SITE.su is an online marketplace specializing in premium domain names, offering more than 40,000 domains for purchase or rental. Its listings cover the .ru, .su, and .рф extensions and include keyword-rich names, synonyms, and transliterations. Customers can browse the full catalogue, download a domain list, or use advanced search to find names by specific criteria.

The marketplace supports instant online purchases, with domains transferred after purchase, as well as rental through the assignment of the customer’s DNS servers. Some rental arrangements include a guaranteed right to buy the domain later. Listings show purchase and monthly rental prices, and selected domains also display age and search-related statistics. Customers who wish to negotiate can submit a question or make an offer through the site; help and online chat are available in the support section. SITE.su presents domain names as options for businesses and personal projects seeking an online identity, with a straightforward process for comparing, renting, or acquiring available names.