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SECURITY SCORE
Certificate Information
Subject
CN=ns.tns3.eu
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
November 05, 2025
Valid Until
February 03, 2026
73 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
59:E8:91:FA:AA:47:E9:51:93:36:66:95:69:5E:0A:BC:88:0E:5B:2F:F5:17:73:D5:8B:03:F2:48:5D:EF:52:3F
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