DNS Gurus
Cached · just now
88/100 SECURITY SCORE

Certificate Information

Subject
CN=*.vercel.joinforma.dev
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M01
Valid From
November 10, 2025
Valid Until
December 09, 2026 315 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
11:60:69:05:23:FB:A5:60:5D:C4:1D:B5:D1:24:5E:54:BA:E8:0B:6F:D1:0F:7F:F3:BF:43:A1:A0:67:D0:82:8D
Alternative Names
4 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=2592000; includeSubDomains
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
camera=(), geolocation=*, microphone=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks

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