SITE.su is an online marketplace specializing in domain names, with a catalogue of approximately 40,000 options in the .ru, .su and .рф zones. The service helps businesses and individuals find memorable, keyword-focused domains for websites and other online projects. Customers can browse the full domain list, download a catalogue, or use advanced search to explore available names and compare purchase and rental prices.

Domains can be purchased online, with ownership administration transferred immediately, or rented by assigning the customer’s DNS servers. Rental agreements include a priority right to buy the domain during the agreement period, with the purchase price fixed in the contract. The site states that rental agreements can run for up to 50 months. Customers can submit questions or propose a price through the contact form, and the Help section offers contact details and online chat. SITE.su presents domain listings with details such as age, price, and SEO-related indicators, supporting informed choices for a company, brand, or personal website.