DNS Gurus
Open Cached · just now
96/100 SECURITY SCORE

Certificate Information

Subject
CN=www.tcgdex.net
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 02, 2025
Valid Until
March 02, 2026 76 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F2:F4:1C:A6:BE:20:1C:1F:94:63:BC:9C:38:76:39:51:8A:B9:3F:CA:6A:FE:DA:2E:49:A7:0B:6B:46:63:2F:00
Alternative Names
24 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=63072000; includeSubDomains; preload
Content-Security-Policy
Good
default-src; frame-ancestors; form-action; +8 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
no-referer
Permissions-Policy
Present
geolocation=(), microphone=(), interest-cohort=()
Recommendations
  • • Strengthen CSP by removing 'unsafe-eval'

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