DNS Gurus
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89/100 SECURITY SCORE

Detected Technologies

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Certificate Information

Subject
CN=blazemeter.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
January 21, 2026
Valid Until
April 21, 2026 59 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
31:0B:F6:E4:7D:9D:90:4E:A1:8B:B7:4B:68:F3:DF:F1:81:C3:62:EE:A4:F7:EE:1B:FA:A2:AF:39:C0:D8:35:8F
Alternative Names
5 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, max-age=300
Content-Security-Policy
AWS CloudFront logo
Basic
default-src; connect-src; font-src; +14 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
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
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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 letsencrypt.org pki.goog
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • • Consider adding 'issuewild' records to control wildcard certificate issuance