DNS Gurus
Cached · just now
86/100 SECURITY SCORE

Certificate Information

Subject
CN=getresponse.pl
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
November 04, 2025
Valid Until
February 02, 2026 32 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
DA:60:3A:2D:43:E3:C5:8F:DA:AF:1D:D1:BE:47:50:DE:B8:E2:A3:0D:40:43:84:16:4D:5C:73:A9:D2:69:B1:5D
Alternative Names
44 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
Good
max-age=31536000; includeSubDomains
Content-Security-Policy
Weak
upgrade-insecure-requests
X-Frame-Options
Excellent
deny
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Significantly strengthen CSP directives
  • • 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 ; cansignhttpexchanges=yes pki.goog ; cansignhttpexchanges=yes letsencrypt.org comodoca.com godaddy.com
Wildcard CAs
pki.goog ; cansignhttpexchanges=yes letsencrypt.org digicert.com ; cansignhttpexchanges=yes comodoca.com
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • You have authorized 5 CAs - consider limiting to only the CAs you actively use