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SECURITY SCORE
Certificate Information
Subject
CN=01l.de
Issuer
C=US, O=Let's Encrypt, CN=R11
Valid From
May 11, 2025
Valid Until
August 09, 2025
Expired
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
FD:D9:16:86:9F:79:48:08:4F:91:74:06:D1:71:C3:98:53:97:F0:59:4F:36:D6:31:7E:3E:3B:D6:62:95:C4:FB
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
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