BA-ZA.NET is a Russian-language website presenting databases and contact lists for business use. Its catalog includes mobile phone numbers, email addresses, company records, customer lists, online databases, and directories associated with sources such as 2GIS and Yandex Business Directory. The site also advertises custom database compilation, including mobile and messenger contacts, and offers materials and tools for webmasters, SEO, and social networks.

Examples shown on the site include business listings by industry and region, decision-maker contacts, and phone-number collections described as relating to particular groups or interests. Some listings are presented as suitable for telemarketing or SMS campaigns. The website notes that its mass SMS distribution service is unavailable. It also provides articles, instructions, news, contact information, payment details, and a shop for browsing its catalog. The site describes its databases as useful for businesses, but the supplied page does not independently establish how contact information is collected, verified, or authorized for marketing use.