What is DNSSEC?
DNSSEC (Domain Name System Security Extensions) is a suite of extensions that add digital signatures to DNS to ensure data integrity and authentication. It protects against DNS cache poisoning.
Why DNSSEC is Essential
- Guarantees DNS data comes from the authoritative source
- Verifies that data wasn't modified in transit
- Prevents DNS Spoofing and Man-in-the-Middle attacks
- Increases trust in internet infrastructure
How DNSSEC Works
DNSSEC creates a chain of trust from the root DNS zone to your domain:
- DNSKEY: Public keys used to verify signatures Public keys used to verify signatures
- DS (Delegation Signer): Hash of child zone's key, stored in parent zone Hash of child zone's key, stored in parent zone
- RRSIG: Digital signatures for each DNS record set Digital signatures for each DNS record set
- NSEC/NSEC3: Proves non-existence of records Proves non-existence of records
Frequently Asked Questions
Does my domain support DNSSEC?
Use our validator above to check. Your registrar and DNS provider must both support DNSSEC for it to work.
Can DNSSEC break my website?
If misconfigured, DNSSEC can cause resolution failures. Always validate your setup after making changes.