DNS over HTTPS (DoH) Servers

DTM

Nov 6, 2018 • 1 min read

I recently conducted some research into DNS over HTTPS (DoH) that is documented here. When it came to identifying any publically available DoH servers available on the Internet I found the best resource to be the curl wiki page to be the best place to start and is probably the most well maintained resource.

I found a few more so I have merged them into the below list and also put together a simple script to do a test GET query against each resolver.

Below is the list of potential endpoints:

dns.google.com
cloudflare-dns.com
1.1.1.1
mozilla.cloudflare-dns.com
dns9.quad9.net
dns10.quad9.net
dns.quad9.net
doh.cleanbrowsing.org
dns.dnsoverhttps.net
doh.crypto.sx
doh.powerdns.org
doh.securedns.eu
doh.ibr.cs.tu-bs.de
doh.eieidns.com
doh.blahdns.com
doh.de.blahdns.com
doh.defaultroutes.de
doh.bugdns.com
doh.datt.pw
doh.ntu.ssooss.win
dns.dnsoverhttps.net
dns.dns-over-https.com
dns.rubyfish.cn
doh.qis.io
public.dns.iij.jp
dns.nextdns.io
dns.switch.ch
jp.tiar.app

The test script is available at the below URL: https://gist.github.com/dtmsecurity/a849e985e6a0b61aeb54890ebcfa55eb

If you run the script you will see that a small number resolvers do not support GET style queries.

Sign up for more like this.