SITE.su is an online marketplace specializing in domain names, with a catalog of more than 40,000 listings across the .ru, .su, and .рф zones. The service helps businesses and individuals find domain names for websites, brands, and personal projects, offering tools to search by keywords and related terms, browse the full catalog, and download domain listings in Excel format.

Customers can purchase a domain online for immediate transfer of administration rights or rent it by arranging their own DNS server addresses. Rental agreements include a priority right to buy the domain during the rental period, with the purchase price fixed in the contract. Rental terms can run for up to 50 months. Listings display purchase and monthly rental prices, and may include domain age and indicators related to search popularity and SEO potential.

For customers who want to discuss a listing or propose a different price, SITE.su provides an inquiry form, along with contact information and online chat through its Help section.