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SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=t.442.cn
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
May 21, 2026
Valid Until
August 19, 2026
71 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
12:EC:84:83:3E:00:1F:F8:17:B6:63:B1:E6:B8:F4:34:7D:7E:82:8C:44:18:F2:FF:4F:2F:4F:8C:12:38:B0:FD
Alternative Names
Security Configuration
TLS Protocols
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
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