SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 listings across the .ru, .su and .рф zones. The service helps businesses and individuals find keyword-based domains for websites and online projects, offering both immediate purchase and rental. Buyers can complete a purchase online, with the domain’s administration rights transferred to them. Rental is offered by the calendar month and allows customers to assign their own DNS servers. Rental agreements include a priority right to buy the domain during the agreement period, at a price fixed in the contract; agreements can last up to 50 months.

Customers can browse the full domain catalogue, download listings in Excel, or use advanced search to find names by selected criteria. Each listing may include the purchase and monthly rental prices, domain age and indicators related to search popularity and SEO appeal. Visitors can also ask a question about a domain or propose a price.