SITE.SU is an online marketplace for premium domain names, offering more than 40,000 domains, primarily in the .ru, .su, and .рф zones. The service helps businesses and individuals find web addresses for websites and online projects, with listings that can be searched by words, themes, and other parameters. Customers can browse the full catalogue, download domain lists, review available information such as age and search-related indicators, and contact the marketplace to ask questions or propose a price.

SITE.SU offers two ways to obtain a domain: immediate online purchase, with transfer of administration rights, or monthly rental. Rental includes the right to change the domain’s name servers and a priority option to buy the domain during the agreement, with the purchase price specified in the contract. The marketplace states that rental agreements can last up to 50 months. Its catalogue includes individual domains and related or synonymous names, giving customers options across multiple spellings and Russian-language domain extensions.