SITE.su is an online marketplace specializing in premium domain names for businesses, brands, and digital projects. The store offers more than 40,000 domains, primarily in the .ru, .su, and .рф zones, including keyword-based names and options in Cyrillic. Customers can browse available domains, use advanced search, review listing details, or download the full catalogue for comparison.

The platform supports both immediate purchase and rental. A completed purchase transfers administration rights to the buyer, while rental allows the customer to assign their own name servers. Rental agreements include a priority right to buy the domain at a price fixed in the contract, and can run for up to 50 months. Prices, domain age, and search-related indicators are shown where available to help customers assess listings.

SITE.su also provides a contact form for questions or price offers, along with help and online chat. Its services are designed to make finding, purchasing, or renting a domain straightforward for customers seeking a suitable web address.