DNS Gurus
Open Cached · just now
81/100 SECURITY SCORE

Certificate Information

Subject
CN=coworking.prime.cv
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
September 13, 2025
Valid Until
December 12, 2025 36 days
Public Key
ECDSA 384 bit (P-384) Strong
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
E6:18:90:45:7C:4C:3B:5B:5D:4B:B3:0E:80:E3:01:9A:4A:8F:6A:0F:FC:09:1A:34:1D:17:9F:0C:EA:4E:BB:E9
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
Excellent
max-age=31536000; includeSubDomains; preload
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
  • • 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
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