DNS Gurus
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86/100 SECURITY SCORE

Certificate Information

Subject
CN=steamcommunity.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
October 08, 2025
Valid Until
January 06, 2026 58 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
88:48:67:DD:DA:B6:04:70:27:F7:65:10:B9:E2:C4:53:0A:4E:7F:C5:5B:8C:E7:05:EA:13:1D:8A:85:6E:02:B1
Alternative Names
48 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=10368000
Content-Security-Policy
Basic
default-src; script-src; object-src; +3 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • Add X-Content-Type-Options: nosniff
  • • 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
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
digicert.com pki.goog letsencrypt.org
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'issuewild' records to control wildcard certificate issuance