SITE.su is an online marketplace specializing in premium domain names, with a large catalog of keyword-focused domains in the .ru, .su, and .рф zones. The service helps individuals and businesses find, purchase, or rent a domain for their online presence. Visitors can browse the full inventory, search by words or other parameters, and download a domain list with available metrics. Listings show purchase and monthly rental prices, alongside details such as domain age and search-related indicators.

Purchases are completed online, with domain administration rights transferred to the buyer. Rental agreements allow customers to use a domain by assigning their own DNS servers and include a priority right to buy it during the rental term, at a price fixed in the agreement. Rental periods can extend up to 50 months. Customers can also contact the marketplace through its help section or submit a question or offer for a listed domain. With instant purchase and rental options, SITE.su provides a practical way to access established and descriptive domain names.