Privacy
Short version: the free filters keep no logs of your DNS queries.
Free filters
Queries to the free Security, Adult and Family endpoints are answered and forgotten. We keep aggregate counts (queries per filter per hour) for capacity planning. Cloudflare for Families provides the upstream resolution for the free filters under Cloudflare's public resolver privacy commitments.
Paid plans
Paid accounts choose their own log retention, from none to 90 days, and can delete logs at any time. A full privacy policy and data-processing agreement will be published before paid plans launch.