Open Cached · just now
97/100 SECURITY SCORE

Certificate Information

Subject
CN=is.nl
Issuer
C=US, O=Amazon, CN=Amazon ECDSA 256 M03
Valid From
May 27, 2025
Valid Until
June 25, 2026 229 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
71:5D:D0:25:2E:FA:6D:B9:19:C3:C3:AC:1D:7B:91:20:71:A2:D1:BC:6F:9C:09:12:31:15:4C:3C:CC:BD:CE:EA
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
Good
max-age=31536000; includeSubDomains
Content-Security-Policy
Good
connect-src; default-src; font-src; +8 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(), display-capture=(), fullscreen=self "https://www.youtube.com", geolocation=self, microphone=()
Recommendations
  • Consider adding 'preload' to HSTS for maximum security
  • Strengthen CSP by removing 'unsafe-eval'

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Recommendations
  • Consider using critical flag (flags=128) for stricter CAA enforcement
  • You have authorized 4 CAs - consider limiting to only the CAs you actively use
  • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts

Subject Alternative Names

2 domains