SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains offered across the .ru, .su, and .рф zones. The service enables customers to purchase a domain or rent it by the month, making a broad selection of keyword-focused names available for businesses and online projects.

Purchases are completed online, with domain administration rights transferred immediately. Rental agreements allow customers to assign their own name servers and include a priority right to buy the domain during the rental period; the purchase price is fixed in the agreement. Rental terms can last up to 50 months.

Visitors can browse the full domain catalogue, download a spreadsheet, or use advanced search to find names by keyword or other criteria. Listings include purchase and monthly rental prices, along with details such as domain age and search-related indicators. Customers can contact the store through its help section or online chat to ask questions or propose a price.