DNS Gurus
Cached · just now
80/100 SECURITY SCORE

Certificate Information

Subject
CN=esimlive.com
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
January 12, 2026
Valid Until
April 12, 2026 87 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B7:BB:9C:3C:FB:A4:67:07:FF:37:C6:12:B3:AA:B4:46:35:BE:D0:DD:4F:34:5D:A2:1C:4E:BA:E5:09:DE:86:C0
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=31556926
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
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
  • • 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
Authorized (Matches CAA policy)
Authorized CAs
pki.goog sectigo.com comodoca.com amazontrust.com digicert.com globalsign.com awstrust.com letsencrypt.org
Wildcard CAs
comodoca.com sectigo.com amazontrust.com pki.goog digicert.com letsencrypt.org globalsign.com awstrust.com
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • You have authorized 8 CAs - consider limiting to only the CAs you actively use
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts