SITE.su is an online marketplace specializing in premium domain names, with a catalog of more than 39,000 names across the .ru, .su, and .рф zones. The service helps individuals and businesses find keyword-based domains, with listings that can be browsed through an expanded search or viewed in a downloadable spreadsheet. Each listing may include purchase and monthly rental prices, domain age, and search-related indicators.

Customers can buy a domain online, with ownership administration transferred immediately, or rent it by assigning their own DNS servers. Rental agreements include a priority right to purchase the domain during the rental period, with the buyout price set in the agreement. Rentals can last up to 50 months. The marketplace also lets prospective buyers ask questions or propose a price, and provides help and online chat through its support section. SITE.su presents domain options such as zrelischa.ru alongside related names and alternatives, supporting customers seeking a suitable web address for a business or personal project.