SITE.su is an online marketplace for premium domain names, offering a large selection of keyword-based domains and websites for buyers and renters. Its catalog features names in the .ru, .su, and .рф zones, with the site describing its inventory as more than 40,000 domains. Customers can browse listings, search by one or more terms, use advanced filters, view a full catalog, or download domain lists with ranking information.

The marketplace supports instant online purchases, with domain administration rights transferred to the buyer, as well as monthly rentals. Rental agreements include a priority right to purchase the domain during the rental period, with the buyout price fixed in the contract; the stated maximum agreement term is 50 months. Rental access is provided by allowing the customer to change the domain’s name servers. SITE.su also offers a way to ask questions or propose a price for a listing, along with help, contact information, and online chat. Its services are intended to make domain acquisition and temporary use straightforward.