We run a public privacy-protecting DNS server with advertising, tracker, and malware filtering. The Usable Privacy DNS (updns) service is accessible via the encrypted DoH and DoT protocols. We use the unified hosts from StevenBlack to filter unwanted domains.
We do not log client IPs, requested domains or any other personally-identifiable information.
We aggregate information on filtered domains and geolocation for user protection.
The updns software stack is available under the BSD 2-Clause License on GitHub.