DNSSEC Checker
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Verify a domain DNSSEC setup in seconds. We check the DNSKEY and DS records, confirm the chain of trust, and tell you whether resolvers can validate your domain and how to fix gaps.
Enter a domain to check DNSSEC:
How the Checker Works
- Query the records, DNSKEY and DS records are fetched.
- Check validation, the authenticated data flag is read.
- Verify the chain, keys and DS records are matched up.
- Report, you get a clear verdict and a fix if needed.
Why It Matters
- Spoofing protection, signatures stop forged DNS answers.
- Visitor safety, users reach the real server, not an attacker.
- Trust signals, secure DNS supports email and domain integrity.
- Outage prevention, a healthy chain avoids validation failures.
Next steps
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DNSSEC Checker: FAQ
What does the DNSSEC checker do?
It queries the DNS for your DNSKEY and DS records, checks whether the resolver validated the answer, and tells you if DNSSEC is enabled, whether the chain of trust is complete, and what to fix if it is not.
What is DNSSEC and why does it matter?
DNSSEC adds cryptographic signatures to DNS so resolvers can verify that answers are authentic and unaltered. It protects your visitors from DNS spoofing and cache-poisoning attacks that could redirect them to malicious servers.
What is the chain of trust?
DNSSEC works by linking signatures from the root zone down to your domain. Your zone publishes DNSKEY records, and your registrar publishes a matching DS record in the parent zone. Both must be present and consistent for the chain to be complete.
I have DNSKEY but no DS record, what does that mean?
It means signing is enabled in your zone but the chain of trust is broken at the registrar. Resolvers cannot validate your domain until you add the DS record at your registrar so the parent zone vouches for your keys.
How do I enable DNSSEC?
Turn on DNSSEC at your DNS provider, which generates the keys and DNSKEY records, then copy the provided DS record into your domain registrar. After propagation, validating resolvers will start verifying your domain.
What does validated by resolver mean?
It means a DNSSEC-aware resolver checked the signatures and set the authenticated data flag, confirming the answer is genuine. This is the real-world proof that your DNSSEC setup is working end to end.
Can DNSSEC break my site if misconfigured?
Yes. Expired signatures or a stale DS record after a key change can make validating resolvers reject your domain, causing outages for some users. Roll keys carefully and keep the DS record in sync with your zone.
Is this DNSSEC checker free?
Yes. It is free, requires no signup, and works on any public domain.
Want Secure, Reliable DNS?
We configure DNSSEC, harden DNS, and keep your domain resilient against spoofing and outages.