# adfree DNS

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](https://en.wikipedia.org/wiki/DNS_over_HTTPS) and [DoT](https://en.wikipedia.org/wiki/DNS_over_TLS) protocols. We use the unified hosts from [StevenBlack](https://github.com/StevenBlack) to filter unwanted domains.

## How to use the Usable Privacy DNS Services

{% content-ref url="updns-services/dns-over-https-doh" %}
[dns-over-https-doh](https://docs.usableprivacy.com/dns/updns-services/dns-over-https-doh)
{% endcontent-ref %}

{% content-ref url="updns-services/dot-dns-over-tls" %}
[dot-dns-over-tls](https://docs.usableprivacy.com/dns/updns-services/dot-dns-over-tls)
{% endcontent-ref %}

## Privacy Policy

1. We do not log client IPs, requested domains or any other personally-identifiable information.
2. We aggregate information on filtered domains and geolocation for user protection.

## Open Source

The [**updns**](https://github.com/usableprivacy/updns) software stack is available under the **BSD 2-Clause License** on GitHub.

### [github.com/usableprivacy](https://github.com/usableprivacy/updns)