DNS Gurus
Cached · just now
96/100 SECURITY SCORE

Certificate Information

Subject
C=DE, ST=Nordrhein-Westfalen, O=Bundesamt fuer Sicherheit in der Informationstechnik, CN=cert-bund.de
Issuer
C=DE, O=D-Trust GmbH, CN=D-TRUST BR CA 2-23-1 2023
Valid From
April 03, 2026
Valid Until
October 18, 2026 76 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA512-RSA
SHA-256 Fingerprint
82:6D:9D:C9:F9:E5:EA:7F:CC:A7:AB:4A:BF:85:F2:CF:48:F8:A0:32:4D:99:5E:A1:6A:66:11:BC:2B:90:60:52
Alternative Names
5 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
Strong
frame-ancestors; default-src; style-src; +9 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
  • • 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