What is the difference between DoH and DoT?

DoH (DNS-over-HTTPS) sends DNS queries over HTTPS on port 443, while DoT (DNS-over-TLS) uses a dedicated TLS connection on port 853. Both encrypt DNS, but DoH easily bypasses firewalls using standard HTTPS port, while DoT is more detectable but provides dedicated encryption.

Does my DNS server support DoH/DoT?

Use this tool to check. Enter your DNS server's IP address or domain name, and the tool will test DoH support on port 443 and DoT on port 853. The results will show which protocols your server supports.

Why should I use DoH/DoT?

DoH/DoT protects your privacy by encrypting DNS queries. This prevents ISPs, networks, and third parties from tracking which websites you visit. It also protects against DNS poisoning attacks and DNS tampering.

Is this tool safe to use?

Yes, this tool is completely safe. It only performs standard DNS queries to check protocol support and doesn't send sensitive data. All connections are encrypted and no personal information is stored.

Which DNS servers support DoH/DoT?

Many public DNS servers support DoH/DoT including Cloudflare (1.1.1.1), Google (8.8.8.8), Quad9, and NextDNS. You can use this tool to check any DNS server, including your organization's internal DNS servers.

DoH/DoT Resolver Checker

How It Works

Use Cases

Technical Explanation

Frequently Asked Questions