DNS Gurus
Cached · just now
86/100 SECURITY SCORE

Certificate Information

Subject
CN=supportability.com.au
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 21, 2025
Valid Until
March 21, 2026 82 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
2D:4B:30:18:3E:07:26:E2:D2:2D:A3:61:DF:98:0A:D4:9D:EA:EE:55:6F:15:74:6D:46:A6:4A:C9:C2:07:C1:80
Alternative Names
1 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=63072000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Present
none
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • 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
amazon.com letsencrypt.org
Wildcard CAs
amazon.com
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement

Subject Alternative Names

1 domain
supportability.com.au