DNS Gurus
Cached · just now
92/100 SECURITY SCORE

Certificate Information

Subject
CN=*.dev.xref.com
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M02
Valid From
March 12, 2025
Valid Until
April 11, 2026 85 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3B:26:90:30:CB:0F:F8:83:2B:4E:9C:DB:20:6A:A0:9A:79:DF:7A:07:54:13:D3:A0:A1:28:79:C6:6B:AB:5E:15
Alternative Names
1 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=31536000
Content-Security-Policy
Strong
script-src; default-src; style-src; +1 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • 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

Subject Alternative Names

1 domain
*.dev.xref.com