SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф zones. Customers can browse listings, search by keywords or other parameters, view domain details, and download the full catalog as an Excel file. The marketplace offers both direct purchases and monthly rentals, with online transactions designed for immediate processing. A purchase transfers domain administration rights, while a rental lets the customer assign their own DNS servers. Rental agreements include a priority right to buy the domain at a price fixed in the contract, and can run for up to 50 months.

Listings include pricing, domain age, and indicators related to search demand and SEO potential. Customers can submit questions or price offers through the site, and the Help section provides contact options and online chat. SITE.su presents its inventory as a resource for people and businesses seeking descriptive or keyword-focused domain names for websites and online projects.