SITE.su is an online marketplace for premium domain names, offering a broad selection of keyword-focused domains in the .ru, .su, and .рф zones. The store says it lists around 39,000 to more than 40,000 domains, which customers can purchase or rent through its website. Its services are designed to make transactions straightforward: buyers can purchase a domain online with immediate transfer of administrative rights, while rental lets customers use the domain by assigning their own name servers.

Rental agreements include a priority right to buy the domain during the rental period, with the purchase price fixed in the contract. The stated maximum rental term is 50 months, and rental prices are charged per calendar month. SITE.su also provides domain search tools, including searches by keyword and advanced parameters, as well as downloadable domain lists and information such as age and SEO-related ratings. Customers can submit questions or price offers through the site, with help, contact details, and an online chat available in its support section.