SITE.su is an online marketplace specializing in domain names, with a catalog of more than 40,000 options across the .ru, .su, and .рф zones. The service helps individuals and businesses find names suited to their projects, including keyword-based domains and related alternatives. Visitors can search by one or more terms, use advanced search filters, browse the full domain catalog, or download a domain list in Excel format.

SITE.su offers both online purchases and monthly rentals. Purchases are completed online, with administration rights transferred immediately. Rental gives customers the right to change the domain’s name servers and includes a priority option to buy the name during the rental term, at a purchase price specified in the agreement. Rental agreements can last up to 50 months. Customers can also ask questions or propose a price for a domain, with contact options and online chat available through the Help section. The marketplace displays domain pricing and selected age and search-related indicators to support comparison.