SURBL specializes in providing reputation data in near real-time feeds. This data can be used for a variety of security measures, such as mail flow protection, mobile communication (SMS), web access (safe browsing, DNS Firewalls), etc. The most well-known data set offered by SURBL is the publicly provided Multi. Additionally, private datasets are available (see below) which are not limited to mail operations. These include Crypto address, Phone number, an E-Mail source list, and the newly activated Fresh domain feeds.