SITE.su is an online marketplace for premium domain names, offering a catalog of more than 40,000 domains in the .ru, .su and .рф zones. The service helps businesses and individuals find an address for a website, brand or online project, with listings that include keyword domains and related name options.

Customers can purchase a domain online for instant transfer or rent one by assigning their own DNS servers. Rental options include a guaranteed right to buy the domain, giving customers a way to use a name before deciding to acquire it. Each listing displays purchase and monthly rental prices, and some include information such as domain age and search statistics.

Visitors can search by one or more words, use advanced search parameters, browse the complete domain list or download listings as an Excel file. For a specific domain, users can submit a question or offer a price through the site. Assistance and online chat are available in the Help section, and account access is provided for registration and sign-in.