DNS Security Checker
Check DNSSEC configuration and CAA records for any domain. Prevent DNS hijacking and unauthorized certificates.
Why DNS Security Matters
Prevent Hijacking
DNSSEC prevents attackers from redirecting your users to malicious sites.
Certificate Control
CAA records ensure only authorized CAs can issue certificates.
Trust Chain
DNSSEC creates a cryptographic chain of trust from root servers.
Frequently Asked Questions
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS records, preventing attackers from hijacking DNS queries and redirecting users to malicious sites.
What are CAA records?
CAA records specify which Certificate Authorities can issue SSL certificates for your domain, preventing unauthorized certificate issuance.
Why does DNSSEC matter?
Without DNSSEC, attackers can perform DNS spoofing attacks, redirecting users to fake versions of your site for credential theft or malware.
More Free Tools
View all 9 toolsCheck SSL certificate validity and TLS security
Check SPF, DMARC, and MX records
Test password strength (100% client-side)
Check if your email was exposed in breaches
Your privacy matters. We don't store any data you submit. Learn more
Secure Your Entire App
DNS security is one layer. VAS scans your application for exposed secrets and vulnerabilities.
Run Full Security Scan