DNS Gurus
Cached · just now
74/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 1
DigiCert logo DigiCert

Certificate Information

Subject
C=US, ST=California, L=Sunnyvale, O=LinkedIn Corporation, CN=www.linkedin-ei.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert SHA2 Secure Server CA
Valid From
February 11, 2026
Valid Until
August 11, 2026 167 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
D9:32:92:85:1A:83:A9:66:04:C8:2E:1D:E4:46:8C:1D:E1:41:B8:29:7E:CB:88:25:3A:94:85:C9:88:AF:55:11
Alternative Names
12 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
Missing
Not configured
Content-Security-Policy
Missing
Not configured Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • 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
Not Authorized (Potential misconfiguration)
CAA Issues
  • • CRITICAL: Current certificate issuer 'C=US, O=DigiCert Inc, CN=DigiCert SHA2 Secure Server CA' is NOT authorized by CAA records. Authorized CAs:
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts