SITE.su is an online marketplace specializing in premium domain names, offering a catalogue of more than 40,000 domains in the .ru, .su and .рф zones. Customers can browse names that match keywords or search terms, explore related alternatives, and use advanced search options to find suitable domains. The marketplace provides domain purchases and rentals, with listed prices and rental rates shown for individual names. Buyers can complete eligible purchases online, with domains transferred immediately, while rentals are arranged by assigning the customer’s DNS servers. Some rental listings include a guaranteed right to purchase the domain later.

SITE.su also supports enquiries and price offers, allowing prospective customers to ask questions or negotiate. Visitors can view or download the full domain catalogue, including listings with available age and rating information, and contact the service through its Help section or online chat. The platform is designed for businesses and personal projects seeking a memorable web address, with options to acquire a domain outright or rent it rather than make an immediate purchase.