Free DNS Security Checker & DNSSEC Validator

Test DNS security online. Validate DNSSEC configuration, check CAA records, analyze nameserver security, and identify DNS misconfigurations. Protect your domain from DNS spoofing, hijacking, and unauthorized certificate issuance.

No credit card required • Instant results

DNSSEC Validation

Verify DNSSEC (DNS Security Extensions) is properly configured to protect against DNS spoofing attacks

CAA Records

Check Certificate Authority Authorization records to prevent unauthorized SSL certificate issuance

Nameserver Analysis

Analyze nameserver configuration, DNS records, and identify potential security vulnerabilities

Why DNS Security Matters

DNSSEC Benefits

  • Protects against DNS cache poisoning
  • Prevents DNS spoofing and hijacking
  • Ensures DNS response authenticity
  • Cryptographic validation of DNS data

CAA Records Protection

  • Controls which CAs can issue certificates
  • Prevents unauthorized SSL certificate issuance
  • Adds layer of protection against phishing
  • Required by many certificate authorities

DNS Security Best Practices

DNS is a critical component of internet infrastructure. Without proper security measures, attackers can redirect your traffic, intercept communications, or impersonate your domain.

  • Enable DNSSEC on your domain to prevent DNS spoofing
  • Configure CAA records to control SSL certificate issuance
  • Use reputable DNS hosting providers with DDoS protection
  • Monitor DNS changes and implement alerts for modifications
  • Regularly audit DNS configuration for misconfigurations

Want the Complete Picture?

FREE

This DNS Security Check is great for a quick check, but our Full Security Scan gives you a comprehensive security audit in one go.