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 keyword-focused web addresses, offering both immediate purchase and monthly rental options. Buyers can complete purchases online, with domain administration rights transferred instantly. Rentals allow customers to use their own DNS servers and include a contractual priority right to buy the domain at a price fixed in the agreement. Rental terms can last up to 50 months.

The marketplace provides search tools for finding domains by words, synonyms, translations, or transliterations. Customers can browse or download the full domain list, review information such as domain age and search-related indicators, and submit questions or price offers. A help section provides contact information and online chat. SITE.su presents a broad catalog of domain names with listed purchase and rental prices, supporting users who want a memorable, relevant address for a website or online project.