SITE.su operates an online marketplace for premium domain names, offering a catalog of more than 40,000 domains, primarily in the .ru, .su, and .рф extensions. Customers can purchase a domain with immediate online transfer or rent one by assigning their own DNS servers. Rental options include a guaranteed right to buy, providing a path from temporary use to ownership. The store supports instant checkout and also invites customers to ask questions or propose a price for individual domains.

Visitors can browse the full domain list, download catalog data, or use advanced search to find names by keywords and related terms. Listings show purchase and monthly rental prices, alongside available details such as domain age and search or ranking indicators. The catalog includes the featured domain lovkost.ru as well as names matched by synonyms, translations, and transliterations. Help, contact information, and online chat are available through the site. SITE.su is designed for businesses and individuals seeking memorable web addresses, with both immediate acquisition and rental offered through one marketplace.