SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains, primarily in the .ru, .su, and .рф zones. The service helps businesses and individuals find a memorable web address for a website or online project, with listings that include keyword-based domains and names in Cyrillic or transliterated forms.

Customers can buy domains online with immediate transfer or rent them by assigning their own DNS servers. Rental options include a guaranteed right to purchase, providing a flexible way to use a domain before committing to a sale. The marketplace displays purchase and monthly rental prices alongside available domain information, and supports searches by name or other parameters. Visitors can browse or download the full domain list, ask questions about a specific listing, or propose a price. Online chat and contact details are available through the Help section. SITE.su presents its catalog as a practical resource for securing a relevant domain name, whether for a commercial website, personal project, or other online presence.