SITE.su is an online marketplace for premium domain names, offering a catalog of more than 39,000 domains across the .ru, .su and .рф extensions. Customers can browse and search for names by keyword, transliteration, translation or other criteria, view available options, and download the full domain list as an Excel file. Listings may include asking prices, rental rates, age and search-related figures.

The marketplace supports both immediate online purchases and domain rentals. Purchases are completed online with instant transfer of the domain, while rental arrangements use the customer’s DNS servers and include a guaranteed right to buy. Visitors can add domains to a cart, sign in or register, and contact the team through the help section or online chat. The site also provides a form for questions or price offers on individual domains, with email and phone details required. SITE.su presents its service as a way for businesses and personal projects to find a concise, memorable web address, with examples such as kaska.su available to buy or rent.