SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф extensions. The service helps businesses and individuals find memorable, keyword-focused names for websites and digital projects. Customers can purchase domains online, with administration rights transferred immediately, or rent a name by setting their own DNS servers. Rental agreements include a priority right to buy the domain at a price fixed in the contract, and can run for up to 50 months.

The marketplace provides tools to search by words or topics, browse or download the full domain list, and filter listings through advanced search. Listings display purchase and monthly rental prices, domain age, and SEO-related indicators based on search data. Buyers can also ask questions or propose a price, with support and online chat available through the help section. SITE.su offers a practical way to compare domain options and secure a name through either purchase or flexible rental.