SITE.SU is an online marketplace for premium domain names, offering more than 40,000 domains across the .ru, .su and .рф extensions. The service helps individuals and businesses find and secure domain names suited to their projects, with listings searchable by keyword and other criteria. Customers can browse or download the full domain catalogue, review information such as asking prices, rental rates, age and selected traffic or search metrics, and contact the seller to ask questions or propose a price.

Domains are available for immediate online purchase or monthly rental. A purchase includes transfer of domain administration rights, while rental allows the customer to set the domain’s name servers. Rental agreements include a priority right to buy the domain during the agreement, with the purchase price fixed in the contract; the listed maximum rental term is 50 months. The marketplace provides online ordering, account sign-in and a help section with contact details and chat. SITE.SU focuses on making domain acquisition flexible, whether customers prefer to buy outright or rent before purchasing.