SITE.su is an online marketplace specializing in premium domain names, with listings across the .ru, .su and .рф extensions. The service offers a catalog of around 40,000 domains, including keyword-based names, and provides options to purchase or rent a domain. Purchases can be completed online, with domain administration rights transferred immediately. For rentals, customers assign their own DNS servers; rental agreements include a priority right to buy the domain, with the purchase price fixed in the contract. The stated maximum rental agreement term is 50 months.

Visitors can browse the full domain list, download listings with available metrics, or use expanded search to find names by relevant terms and parameters. Each listing may show its purchase price, monthly rental price, age and SEO-related rating. Customers can also submit questions or propose a price, with contact details required, and reach the service through the help section or online chat. SITE.su is designed for individuals and businesses seeking a domain for a website, project or online presence.