“Any data Cloudflare handles as a result of its resolver for Firefox is as a date processor acting pursuant to Firefox’s data processing instructions. Therefore, the data Cloudflare collects and processes pursuant to its agreement with Firefox is not covered by the Cloudflare Privacy Policy. As part of its agreement with Firefox, Cloudflare has agreed to collect only a limited amount of data about the DNS requests that are sent to the Cloudflare Resolver for Firefox via the Firefox browser. Cloudflare will collect only the following information from Firefox users: […] All of the above information will be stored briefly as part of Cloudflare’s temporary logs, and then permanently deleted within 24 hours of Cloudflare’s receipt of such information.”
source: https://developers.cloudflare.com/1.1.1.1/commitment-to-priv...