SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains in the .ru, .su, and .рф extensions. The catalog includes keyword-based and other domain names, with listings available for immediate purchase or rental. Customers can browse the full inventory, download a domain list in Excel, and use advanced search to find names by specific terms or criteria.

The marketplace supports online purchasing with immediate domain transfer, as well as rental by assigning the customer’s DNS servers. Some rental options include a guaranteed right to buy the domain later. Visitors can view individual listings, compare purchase and monthly rental prices, place an order through the shopping cart, or contact the seller to ask a question or make an offer. The site also provides account registration and login, along with a Help section featuring contact information and online chat. SITE.su serves individuals and businesses seeking a distinctive web address for an online project, brand, or commercial presence.