SITE.su is an online marketplace specializing in premium domain names, with a catalog of approximately 40,000 domains across the .ru, .su, and .рф zones. The store helps individuals and businesses find domain names suited to their brands, keywords, and online projects, including names related to specific industries and search terms.

Customers can purchase domains online, with ownership administration transferred immediately, or rent them on a monthly basis. Rental agreements provide a priority right to buy the domain during the rental period, with the purchase price fixed in the contract. Renting is arranged by allowing the customer to change the domain’s name server settings. The site offers domain search tools, including advanced search and suggestions for matching, synonymous, or translated names. Visitors can browse or download the full domain list, review available pricing and domain information, and contact the marketplace through its help section or online chat. Customers may also ask questions about a domain or propose a price.