DNS Gurus
Cached · just now
88/100 SECURITY SCORE

Certificate Information

Subject
CN=www.audi.de
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 11, 2025
Valid Until
March 11, 2026 46 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
CA:1F:A1:31:D0:4B:E3:2C:C5:80:FE:D5:85:EF:E6:79:A8:B2:14:01:93:3E:9C:1C:01:6D:FD:29:31:C3:0E:9B
Alternative Names
59 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=31536000 ; includeSubDomains
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(self "https://e0k754.acquire.io"), microphone=(self "https://e0k754.acquire.io"), usb=()
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Significantly strengthen CSP directives
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking

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