This guide explains how to enable DNS over HTTPS (DoH) in the Microsoft Edge browser and route requests through your personal ADnull DNS.
Step 1. Open Edge Settings
Click the three dots ⋯ in the top right corner → Settings.
Step 2. Go to Privacy, search, and services
Select Privacy, search, and services from the left menu.
Step 3. Find the Security section and enable secure DNS
Scroll down to the Security section → find Use secure DNS → enable the toggle → select Choose a service provider → from the dropdown choose Custom.
Step 4. Enter the DoH address
Paste the address into the field:
https://YOUR-SUBDOMAIN.dns.adnull.com/dns-query
Replace YOUR-SUBDOMAIN with your personal subdomain — it is shown in the Settings section of your ADnull account.
Click Save.
Done!
Microsoft Edge now uses ADnull DNS. Ads and trackers are blocked at the DNS level in your browser.
FAQ
Where do I find my subdomain?
Go to the Settings section in your ADnull account — the subdomain is shown in the "DNS Domain" card.
DoH was not applied after saving
Restart Edge and make sure the address is entered without spaces and starts with
https://.
Is DoH supported in Edge on mobile?
Edge on Android supports DoH in browser settings.
On iOS, Edge uses the system DNS — use the Apple profile from the Settings section instead.