DNS Gurus
Open Cached · just now
79/100 SECURITY SCORE

Certificate Information

Subject
CN=artificialindustry.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
October 29, 2025
Valid Until
January 27, 2026 79 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
1C:0C:4F:C0:C3:5E:3D:26:6F:8F:83:AD:75:83:58:F4:15:69:1A:B6:29:FF:D6:04:67:A2:E7:1F:64:96:E1:EB
Alternative Names
28 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
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
digicert.com letsencrypt.org pki.goog ; cansignhttpexchanges=yes sectigo.com
Wildcard CAs
letsencrypt.org sectigo.com
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • You have authorized 4 CAs - consider limiting to only the CAs you actively use
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts