DNS Gurus
Open Cached · just now
92/100 SECURITY SCORE

Certificate Information

Subject
CN=www.lroot.icann.org
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
September 20, 2025
Valid Until
December 19, 2025 36 days
Public Key
ECDSA 384 bit (P-384) Strong
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
09:C3:49:CF:F4:03:DA:43:08:42:48:30:8B:E7:29:3D:03:34:6F:EF:BC:52:F3:6D:59:2F:49:91:24:2B:E9:8C
Alternative Names
13 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
Good
max-age=315360000; includeSubDomains
Content-Security-Policy
Basic
default-src; connect-src; script-src; +5 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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