DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified (likely missing intermediate certificates). The analysis was completed using insecure mode. Data may be less reliable.

Open Cached · just now
89/100 SECURITY SCORE

Certificate Information

Subject
CN=cicapschool.ee.abkoolitus.ee
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
September 26, 2025
Valid Until
December 25, 2025 31 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
51:39:BF:F9:AA:A9:84:D4:21:F2:1A:CA:02:C5:02:EF:43:A3:89:1F:27:67:10:02:BD:7C:3F:61:8C:07:87:92
Alternative Names
15 domains

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • 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