DNS Gurus
Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
CN=*.osc-secnum-fr1.scalingo.io
Issuer
C=FR, O=Gandi SAS, CN=GandiCert
Valid From
December 17, 2025
Valid Until
January 05, 2027 251 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B5:5D:31:C1:1B:9F:32:81:A1:72:7D:28:DA:AC:B6:C0:D0:07:29:83:67:EE:14:25:6A:F8:BF:85:99:C2:32:2E
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
Good
max-age=63072000; includeSubDomains
Content-Security-Policy
Missing
Not configured Analyze
Content-Security-Policy-Report-Only
Basic
default-src; font-src; img-src; +10 more Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • 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