SITE.SU is an online marketplace specializing in keyword domain names in the .ru, .su, and .рф zones. The store presents a catalog of approximately 39,000 domains and enables customers to buy names instantly or rent them, including rental arrangements with a guaranteed right to purchase. Its listings cover a wide range of names, with options displayed alongside prices and available domain information.

Customers can browse the full catalog, download a spreadsheet of domains, or use advanced search filters such as price, name length, domain age, and ranking indicators. Search tools also surface names related by synonym or translation. For a listed domain, visitors can submit a question or propose a price, with contact details required. The site provides account registration and login, a shopping-cart process for purchases and rentals, and a Help section with contact information and online chat. By bringing domain listings, search tools, and transaction options together, SITE.SU serves individuals and businesses looking for relevant domain names in Russian-language internet zones.