DNS Gurus
Open Cached · just now
89/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=Florida, L=Fort Lauderdale, O=Citrix Systems Inc., CN=www.citrix.com
Issuer
C=US, O=DigiCert Inc, OU=www.digicert.com, CN=GeoTrust TLS RSA CA G1
Valid From
July 05, 2025
Valid Until
July 07, 2026 227 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
18:9A:2E:FD:B6:AA:FB:AD:1A:09:D2:A9:1C:D5:F6:C4:61:CD:B1:99:59:5D:86:A1:2C:30:D7:94:4B:DE:11:A7
Alternative Names
31 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=31449600
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
microphone 'none'; camera 'none'; usb 'none'
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Significantly strengthen CSP directives

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports