SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 domains offered across the .ru, .su, and .рф zones. The store serves businesses and individuals looking for a domain for a website, brand, or personal project. Customers can browse a broad catalogue of keyword-based names, including domains with related words and translations, or use the search tools to find options by term or other parameters.

Domains are available for immediate purchase or monthly rental. The service states that purchases are completed online with immediate domain transfer, while rental involves assigning the customer’s DNS servers. Rental can also include a guaranteed right to buy the domain. Listings display prices and may include information such as domain age and search-related ratings. Customers can view or download the full catalogue, including an Excel list, and contact the store to ask a question or propose a price. Online chat and contact details are available through the help section.