DNS Gurus
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89/100 SECURITY SCORE

Certificate Information

Subject
CN=www.adlik.ai
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
September 26, 2025
Valid Until
December 25, 2025 50 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3C:19:A7:E4:A4:6F:37:A6:D8:FC:DB:C0:5E:65:29:A5:D2:F4:4F:48:5F:FE:CA:13:15:5B:6E:60:3E:0C:C9:D8
Alternative Names
21 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31622400
Content-Security-Policy
Weak
connect-src
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
geolocation=(self "https://example.com") microphone=() camera=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Significantly strengthen CSP directives

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports