SITE.su is an online marketplace for premium domain names, offering a catalog of more than 40,000 domains, primarily in the .ru, .su, and .рф zones. The service helps businesses and individuals find domain names for websites and online projects, with listings organized around keywords, translations, transliterations, and related terms. Customers can browse the full catalog, use an advanced search, or download a domain list in Excel format.

The marketplace offers both outright purchases and monthly rentals. Buyers can complete eligible purchases online, with domains transferred immediately; rental arrangements are made by assigning the customer’s DNS servers, and some rentals include a guaranteed right to buy. Listings display prices and may include details such as domain age and search-related indicators. Customers interested in a specific name can submit a question or propose a price, while the Help section provides contact information and online chat. SITE.su presents domain acquisition as a flexible option for establishing or supporting an online presence, whether customers prefer to secure a name permanently or use it through rental.