SITE.su is an online marketplace for premium domain names, offering more than 40,000 domains primarily in the .ru, .su, and .рф extensions. The service helps businesses and individuals find memorable, keyword-focused web addresses for websites and online projects. Customers can browse listings, search by words or themes, use advanced search options, and view related domains, including names with synonyms, translations, or transliterations. Full domain lists are also available to view or download.

Domains can be purchased online with immediate transfer or rented by pointing the customer’s DNS servers to the selected name. Rental options include a guaranteed right to buy, giving customers a way to use a domain before committing to its purchase. The site displays purchase prices and monthly rental rates, and some listings may be open to negotiation. Customers can place eligible domains in a cart for instant purchase or rental, while the help section provides contact information and online chat. SITE.su focuses on making domain discovery and acquisition straightforward through searchable listings and convenient online transactions.