DNS Gurus
Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
CN=carta.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
December 10, 2025
Valid Until
March 10, 2026 75 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
2A:D4:AC:71:E9:0D:E2:56:41:29:D8:38:5A:6F:EF:00:BB:80:93:58:E4:8C:91:91:E2:1A:82:3D:25:B8:10:8F
Alternative Names
6 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
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • 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
letsencrypt.org pki.goog ; cansignhttpexchanges=yes ssl.com amazon.com comodoca.com digicert.com ; cansignhttpexchanges=yes
Wildcard CAs
amazon.com comodoca.com digicert.com ; cansignhttpexchanges=yes letsencrypt.org pki.goog ; cansignhttpexchanges=yes ssl.com
Incident Reporting
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • You have authorized 6 CAs - consider limiting to only the CAs you actively use