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 individuals and businesses find web addresses, including keyword domains and names with Cyrillic or transliterated spellings. Customers can browse the full catalog, search by words or themes, and use advanced search options to narrow results. Domain listings include information such as purchase and rental prices, age, and selected traffic or search indicators.

SITE.su offers two ways to use a domain: immediate online purchase, with transfer described as instant, or rental through the customer’s DNS servers. Some rentals include a guaranteed right to buy the domain later. Visitors can place orders through the site, submit questions or price offers, and contact the marketplace through its help section and online chat. The catalog can also be downloaded as a spreadsheet. SITE.su is focused on making domain selection and acquisition convenient for customers seeking an address for a website or online business.