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SECURITY SCORE
Certificate Information
Subject
CN=nsc.aoeu.com
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
October 25, 2025
Valid Until
January 23, 2026
72 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
43:ED:0C:67:60:E3:88:2A:97:1D:16:BA:E6:9B:2B:0F:C6:13:95:EE:43:42:50:45:87:18:BB:B4:24:0D:84:8B
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