DNS Gurus
Cached · just now
91/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 5
GitHub logo GitHub Let's Encrypt logo Let's Encrypt Amazon S3 logo Amazon S3 Azure Blob Storage logo Azure Blob Storage GitHub Copilot logo GitHub Copilot

Certificate Information

Subject
CN=hsivonen.fi
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
February 27, 2026
Valid Until
May 28, 2026 50 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
32:10:7D:12:5D:51:49:EE:45:D6:AC:2A:CB:D7:F1:78:44:2A:6C:1C:99:0F:6C:1D:4A:4B:F6:16:75:92:BF:9B
Alternative Names
18 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
Present
max-age=31536000; includeSubdomains; preload
Content-Security-Policy
GitHub logo
Good
default-src; base-uri; child-src; +12 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Excellent
deny
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Strengthen CSP by removing 'unsafe-eval'
  • • 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