DNSSEC Checker

Check if a domain has DNSSEC enabled and valid DNSKEY records.

DNSSEC (DNS Security Extensions) adds cryptographic signatures to DNS records to protect against spoofing and cache poisoning attacks. Our DNSSEC checker queries DNSKEY records for any domain to verify whether DNSSEC is properly enabled.

Result

Enter a domain to check DNSSEC.
In Action

DNSSEC Checker in action

Your domain suddenly goes dark for some users. The DNSSEC checker shows validation failing — the DS record no longer matches the DNSKEY after a registrar migration. Updating the DS record fixes it, and the checker confirms validation passes again.

Frequently Asked Questions

What is DNSSEC?

DNSSEC adds cryptographic signatures to DNS records to protect against spoofing and cache poisoning attacks.

How do I check if a domain has DNSSEC enabled?

Enter the domain and the tool queries its DNSKEY and DS records and validates the chain of trust. It reports whether DNSSEC is active and whether signatures validate correctly.

What happens when DNSSEC validation fails?

Validating resolvers refuse to answer for the domain — the site becomes unreachable for users on those resolvers. This usually happens after mismanaged key rollovers. Regular DNSSEC checks catch configuration drift early.

Is DNSSEC required for every domain?

Not required, but recommended for any domain where trust matters — banks, email providers, and login services especially. DNSSEC prevents attackers from forging DNS answers and redirecting your visitors to fake servers.