ChromeOS

ChromeOS applies its secure DNS setting to the whole system, including Android and Linux apps.

1. Open Settings → Privacy and security → Security (search for “secure DNS”).

2. Turn on Use secure DNS and choose Add custom DNS service provider (labelled Custom on some versions).

3. Enter:

   https://dns.opdns.net/<profile-id>/<device>

   Screenshot to comeChromeOS secure DNS setting with a custom provider and the opdns DoH URL.

4. Check it works.

On managed Chromebooks (school or work), the administrator’s policy may lock this setting.

DNS-over-HTTPS: profile and device from the URL path

The first path segment is the profile id, the optional second one the device name: https://dns.opdns.net/<profile-id>/<device>. Every query carries both, so logs and analytics show this device by name wherever it connects from.

How identification works