Tracker Radar collects common third-party domains and rich metadata about them. The data is collected from the DuckDuckGo crawler. More details are in this blog post.

This is not a block list, but a data set of the most common third-party domains on the web with information about their behavior, classification and ownership. It allows for easy custom solutions with the significant metadata it has for each domain: parent entity, prevalence, use of fingerprinting, cookies, privacy policy, and performance. The data on individual domains can be found in the domains directory.