SITE.su is an online marketplace specializing in premium domain names, with more than 40,000 listings across the .ru, .su, and .рф zones. The service helps businesses and individuals find memorable web addresses, including keyword domains and names related to specific themes. Customers can browse listings, search by words or other criteria, view a complete inventory, or download domain information in Excel format.

The marketplace offers both immediate online purchases and domain rentals. Rentals are arranged by assigning the customer’s DNS servers, and some options include a guaranteed right to buy the domain later. Purchased domains are transferred online, while buyers can also contact the seller to ask questions or propose a price. The site provides account registration and sign-in, along with a help section featuring contact details and online chat. Listings show prices for purchase and monthly rental, and may include domain age and rating information. SITE.su presents domain acquisition and rental as flexible ways to secure an online address for a brand, business, or project.