SITE.su is an online marketplace specializing in premium domain names, offering buyers and businesses a large selection of keyword-focused domains in the .ru, .su, and .рф zones. The store says its catalogue includes more than 40,000 domains and provides tools to browse the full inventory, search by keywords or other parameters, and download a domain list in Excel format.

Customers can purchase a domain online, with administration rights transferred after purchase, or rent one by assigning their own DNS servers. Rental agreements include a priority right to buy the domain, with the purchase price fixed in the contract; rental terms can last up to 50 months. The site also provides domain information, including age and indicators related to search interest and SEO appeal.

For customers considering a particular name, SITE.su offers a way to ask questions or propose a price, alongside help and online chat through its support section. Its services are designed to make domain selection, purchase, and rental accessible through a single online store.