SITE.su is an online marketplace focused on premium domain names, offering more than 40,000 domains for customers seeking an address for a business, website, or personal project. Its listings include keyword-based domains in the .ru, .su, and .рф zones, with options to buy or rent. The service supports instant online purchases, with domains transferred immediately, and rentals arranged by assigning the customer’s DNS servers. Some rental agreements include a guaranteed right to purchase the domain later.

Visitors can browse the full catalogue, search by words or themes, and use advanced search options to narrow results. Listings show purchase and monthly rental prices, and may include information such as domain age and rating. Customers can also download the complete domain list, including available traffic and ranking indicators, as an Excel file. For domains with listed prices, buyers can use the shopping cart to start a purchase or rental. Those who wish to negotiate or propose a different price can send an inquiry through the site; help, contact details, and online chat are available in the support section.