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SECURITY SCORE
Certificate Information
Subject
CN=nl.eu.org
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
November 06, 2025
Valid Until
February 04, 2026
32 days
Public Key
ECDSA
384 bit
(P-384)
Strong
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
C1:05:C9:69:F3:DF:29:C8:A9:21:11:C4:51:2C:57:D6:A9:42:87:21:CB:26:6C:58:EB:B3:10:43:A8:7E:46:BB
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=63072000; includeSubdomains; preload
Content-Security-Policy
Weak
frame-src
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Significantly strengthen CSP directives
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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