SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains available across the .ru, .su, and .рф zones. The service helps businesses, entrepreneurs, and individuals find memorable web addresses for websites and online projects. Customers can browse the full domain catalogue, search by keywords or other parameters, and review information such as domain age and available traffic or search indicators.

Domains can be acquired through immediate online purchase, with the domain transferred after payment, or rented by assigning the customer’s DNS servers. Some rental arrangements include a guaranteed right to buy the domain later. The marketplace displays purchase prices and monthly rental rates, and visitors can submit a question or offer a different price for a specific domain. The site also provides options to download the domain list, access help, and contact the team through online chat. Its catalogue includes keyword-based names, synonyms, translations, and transliterations, giving customers multiple ways to identify a suitable domain.