DNS Gurus
Open Cached · just now
77/100 SECURITY SCORE

Certificate Information

Subject
C=FR, L=PARIS, O=VILLE DE PARIS, CN=crt-c0001-006-01.paris.fr, UNKNOWN=S363197590
Issuer
C=FR, O=Certigna, UNKNOWN={:asn1_OPENTYPE, <<12, 20, 78, 84, 82, 70, 82, 45, 52, 56, 49, 52, 54, 51, 48, 56, 49, 48, 48, 48, 51, 54>>}, CN=Certigna Server Authentication OVCP EU CA G1
Valid From
November 03, 2025
Valid Until
January 31, 2026 71 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
14:D8:EF:8D:D8:B8:3D:18:62:EB:D9:81:A0:EC:6C:F6:F4:A3:5A:2A:0C:DD:6A:71:90:BA:76:E0:BA:B8:CA:C2
Alternative Names
16 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=15768000
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
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • 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
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