DNS Gurus
Open Cached · just now
93/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=North Carolina, L=Raleigh, O=Red Hat, Inc., CN=*.fedoraproject.org
Issuer
C=US, O=DigiCert Inc, CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1
Valid From
September 25, 2025
Valid Until
October 26, 2026 357 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
B4:66:74:91:06:5F:E2:85:03:16:E7:FF:F0:12:AC:77:77:A0:30:A4:27:7E:C7:D1:16:3C:B5:27:06:A9:CF:D0
Alternative Names
2 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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • 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 digicert.com
Wildcard CAs
digicert.com letsencrypt.org
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement

Subject Alternative Names

2 domains
fedoraproject.org *.fedoraproject.org