SITE.su is an online marketplace for domain names, offering a catalog of more than 40,000 domains across the .ru, .su, and .рф zones. The service helps individuals and businesses find domain names for websites and online projects, with listings searchable by keywords and other parameters. Customers can browse the full catalog, download a domain list, and review information such as asking prices, rental rates, age, and available ranking data where provided.

Domains can be purchased online with immediate transfer or rented by assigning the customer’s DNS servers. The marketplace also offers rentals with a guaranteed option to buy, giving customers a way to use a domain before committing to a purchase. Listings display separate prices for purchase and monthly rental, and interested customers can contact the seller to ask questions or propose a price. SITE.su provides registration and sign-in, help information, and an online chat for assistance. Its selection includes names in Latin and Cyrillic scripts, with examples such as slabak.ru and related domain suggestions.