DNS Gurus
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91/100 SECURITY SCORE

Certificate Information

Subject
CN=circoplastics.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
October 30, 2025
Valid Until
January 28, 2026 53 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
1D:89:2B:02:D7:1D:60:47:1B:F8:84:23:7E:74:5F:8B:19:12:F7:80:8F:3E:8F:A0:6C:C8:52:1C:56:D5:65:8F
Alternative Names
67 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=31557600; includeSubDomains
Content-Security-Policy
Basic
upgrade-insecure-requests; default-src; frame-ancestors; +3 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
no-referrer, 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