SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 39,000 domains across the .ru, .su, and .рф zones. The service helps businesses and individuals find domain names for websites, brands, and online projects, offering both immediate purchase and rental options. Customers can browse the full inventory, search by keywords or other criteria, and download domain listings in Excel format. The marketplace also provides contact options, including online chat and a form for questions or price offers.

Purchasing a domain transfers its administration rights, while rental gives the customer the ability to assign 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 extend up to 50 months. SITE.su presents details such as domain age and search-related indicators to support evaluation. Its services are designed to make acquiring or using a suitable domain straightforward, whether customers are ready to buy immediately or prefer to rent first.