SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 listings across the .ru, .su, and .рф extensions. The service helps businesses and project owners find relevant domain names, including keyword-based options, through search tools for matching terms, prefixes, translations, and related synonyms. Customers can browse the full inventory, use advanced search, or download a domain list in Excel format.

Domains are available for immediate online purchase or monthly rental. The marketplace says purchases include instant domain transfer, while rentals are arranged by assigning the customer’s DNS servers; some rental options also include a guaranteed right to buy the domain later. Listings display prices and may include details such as domain age and ratings. Visitors can submit a question or offer a price for a specific name, and the site provides help, contact information, and online chat. SITE.su presents its catalogue as a resource for organizations and individuals seeking a distinctive web address for a business or personal project.