SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 40,000 domains across the .ru, .su, and .рф zones. The store helps businesses and individuals find web addresses for commercial ventures, personal projects, and online brands, offering keyword-based names as well as related and synonymous options.

Customers can purchase domains online or rent them by the month. Purchases involve the transfer of domain administration rights, while rental gives customers the right to change the domain’s name servers. Rental agreements include priority rights to buy the domain during the rental term, with the purchase price fixed in the contract; agreements may last up to 50 months. The site describes purchases and rentals as available through an online process.

To support browsing, SITE.su provides domain search, an expanded search option, a full catalog, and a downloadable domain list with listed indicators. Customers can also contact the store through its help section or online chat to ask questions or propose a price.