SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available in the .ru, .su, and .рф zones. The service helps businesses and individuals find keyword-focused domain names for websites, brands, and personal projects. Customers can purchase domains online with immediate transfer or rent them by assigning their own DNS servers. Rental listings include an option with a guaranteed right to buy, giving customers flexibility before committing to ownership.

The marketplace offers tools to browse the full domain inventory, search by keywords and other parameters, and download domain lists with indicators such as age and ranking data. Listings show purchase and monthly rental prices, while customers who want to negotiate can submit an offer or ask a question about a specific domain. A help section provides contact information and online chat support. By combining an extensive selection, immediate purchase and rental options, and practical search features, SITE.su makes Russian-language and other regional domain names accessible for a range of online projects.