SITE.su is an online marketplace for premium domain names, offering a catalogue of approximately 40,000 domains in the .ru, .su, and .рф zones. The service enables customers to purchase domain names online or rent them, with rental options described as including a priority right to buy. For purchases, SITE.su states that domain administration rights are transferred instantly; rental involves assigning the customer’s DNS servers. Rental prices are presented per calendar month, and the agreement can run for up to 50 months, with the purchase price fixed in the contract.

Customers can browse the full domain list, download a spreadsheet, or use an advanced search to find names by criteria or keywords. Listings display information such as purchase and rental prices, domain age, and search-related indicators. Interested users can place an order through the relevant purchase or rental option, sign in, or contact the marketplace to ask a question or propose a price. The site also provides a help section with contact details and online chat.