DoH Provider Checker
DNS over HTTPS (DoH) encrypts your DNS lookups inside a normal HTTPS connection, so nobody on the network can read or modify the sites you look up. This tool tests the four most popular public DoH providers live from your browser, measures each one's latency, and ranks them fastest first.
| # | Provider | Status | Latency | Answers |
|---|
How to use
- Keep the default test domain or type your own.
- Click Run check to query all four providers at once.
- Read the table: reachable providers are sorted fastest first; blocked ones are marked clearly.
Note: Some office, school, and mobile networks block DNS over HTTPS on purpose. If one or more providers fail here, that usually means your network is restricting encrypted DNS — try the same check from a different network to compare. Nothing is stored; the queried domain is visible to the providers you test.
Frequently Asked Questions (FAQ)
What is DNS over HTTPS (DoH)?
DNS over HTTPS sends your DNS lookups over an encrypted HTTPS connection instead of plain text, so no one on the network can read or tamper with the domain names you look up.
How does the DoH provider checker work?
It sends a live DNS query for example.com to Cloudflare, Google, Quad9 and AdGuard directly from your browser, measures each response time, and sorts the results fastest first.
Why would a DoH provider show as blocked?
Many office and school networks block DNS over HTTPS on purpose, so the browser cannot reach the provider and the check times out. That result tells you the network is restricting encrypted DNS.
Is the DoH provider checker free?
Yes, it is free and needs no signup. The tests run in your browser and nothing is stored.