SITE.su is an online marketplace specializing in premium domain names, with a selection of approximately 40,000 domains in the .ru, .su, and .рф zones. The store enables customers to purchase a domain or rent it, offering options for businesses, personal projects, and other online ventures. Purchases are completed online, with domain administration rights transferred immediately. Rental gives customers the right to change the domain’s name server settings and includes a priority right to buy the domain during the rental period; the buyout price is fixed in the agreement. Rental agreements can last up to 50 months.

Customers can browse the full domain inventory, download a domain list with metrics, or use an advanced search to find names by criteria or keywords. Listings show purchase and monthly rental prices, along with information such as domain age and search-related indicators. For individual listings, visitors can submit a question or offer a price, and the site directs users to its Help section for contact details and online chat.