SITE.su is an online marketplace for buying and renting domain names, with a catalogue of more than 40,000 domains across the .ru, .su, and .рф zones. The service helps businesses and individuals find names for websites, brands, and online projects, offering listings that include keyword-based domains and other names available for purchase or lease.

Customers can buy a domain online with immediate transfer or rent one by assigning their own DNS servers. Rental options may include a guaranteed right to purchase the domain later. The website provides search tools for finding domains by words or other parameters, as well as downloadable catalogue lists with domain information. Visitors can view purchase and monthly rental prices, submit a question about a particular name, or make an offer to negotiate its price. Online registration and account access are also available, while the Help section provides contact details and online chat. SITE.su presents domain acquisition and rental as flexible ways to secure a suitable name for a business or personal project.