DNS Gurus
Cached · just now
91/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 10
Let's Encrypt logo Let's Encrypt draw.io logo draw.io Dropbox logo Dropbox GitHub logo GitHub GitLab logo GitLab Google API JS Client logo Google API JS Client Google Fonts logo Google Fonts OpenAI logo OpenAI Active incidents Pusher logo Pusher Microsoft SharePoint logo Microsoft SharePoint

Certificate Information

Subject
CN=draw.io
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
February 12, 2026
Valid Until
May 13, 2026 41 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
9E:D2:72:CB:21:60:75:58:93:D0:3E:2F:67:F9:6C:73:D0:DC:7D:E7:E9:40:91:B2:49:4C:BE:A0:F9:61:BC:14
Alternative Names
2 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=31536000; includeSubDomains
Content-Security-Policy
Dropbox logo
Good
default-src; script-src; connect-src; +9 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Present
microphone=()
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Strengthen CSP by removing 'unsafe-eval'
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking

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

2 domains
draw.io *.draw.io