SITE.su is an online marketplace for premium domain names, offering a catalog of more than 40,000 domains across the .ru, .su and .рф zones. The service helps businesses, entrepreneurs and individuals find memorable names for websites and online projects, including keyword-based domains related to specific topics. Customers can purchase a domain online with immediate transfer or rent it by assigning their own DNS servers. The marketplace also offers rental with a guaranteed right to buy, giving customers an option to secure a domain before committing to purchase.

Visitors can browse the full domain list, download a catalog in Excel format, or use advanced search to find names by criteria and keywords. Listings show prices for purchase and rental, and some include domain age and search-related statistics. Customers may submit questions or propose a price through the site, with contact details and online chat available in the Help section. The shifri.ru listing is one example in the catalog, alongside related names in Latin and Cyrillic spellings.