SITE.su is an online marketplace specializing in premium domain names, offering more than 40,000 options, primarily in the .ru, .su, and .рф zones. Customers can browse, search, and compare domains, including keyword-based names, synonyms, transliterations, and related terms. Listings display details such as purchase and monthly rental prices, domain age, and selected rating or search indicators.

The marketplace supports immediate online purchases, with domains transferred to the buyer, as well as rentals arranged by assigning the customer’s DNS servers. Rental agreements include a guaranteed right to purchase the domain, and visitors can submit questions or propose a price through the site. Search tools help users find names by word or theme; the full inventory can also be viewed or downloaded as a spreadsheet. SITE.su provides customer assistance through its Help section, including contacts and online chat. Its services are designed for individuals and businesses seeking memorable web addresses for websites, online projects, or brand development, with flexible options to acquire a suitable domain through purchase or rental.