DNS Gurus
Cached · 7h ago
96/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 6
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Certificate Information

Subject
CN=developers.crossbeam.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
March 15, 2026
Valid Until
June 13, 2026 33 days
Public Key
RSA 4096 bit Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
8A:4B:C9:E6:3D:81:63:C4:06:2F:B1:15:AE:0B:DD:7F:F0:69:77:25:DB:FE:85:DB:BC:25:30:4D:29:B6:E6:E0
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Google Fonts logo
Basic
font-src; frame-ancestors; object-src; +5 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
  • • 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
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Authorized CAs
letsencrypt.org
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • • Consider adding 'issuewild' records to control wildcard certificate issuance

Subject Alternative Names

1 domain
developers.crossbeam.com