SITE.su is an online marketplace for premium domain names, offering a catalog of around 40,000 domains in the .ru, .su and .рф zones. The service helps individuals and businesses find memorable web addresses for projects across a range of industries. Customers can browse the full domain list, search by keywords or other parameters, and explore suggestions based on transliterations, synonyms and translations.

Domains are available for immediate purchase or rental. The site describes purchases as online transactions with instant domain transfer, while rental involves assigning the customer’s DNS servers. Some rental arrangements include a guaranteed right to buy the domain later. Listings display prices in rubles and may also show information such as domain age and search-related metrics.

For customers who want to discuss a listing or negotiate a price, SITE.su provides a question and offer form, along with contact details and online chat through its help section. Users can also download the domain catalog as a spreadsheet, making it easier to review available names and compare options.