DNS Gurus
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89/100 SECURITY SCORE

Certificate Information

Subject
CN=gridedge.dev
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
November 15, 2025
Valid Until
February 13, 2026 73 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
79:34:08:6A:4C:36:96:B4:16:6B:D1:62:64:0E:B2:67:C4:8D:FE:D2:04:A3:35:C9:72:96:0C:D5:0D:76:1F:FC
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
Present
max-age=31536000
Content-Security-Policy
Weak
style-src; font-src
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
accelerometer=(),ambient-light-sensor=(),autoplay=(),battery=(),camera=(),cross-origin-isolated=(),display-capture=(),document-domain=(),encrypted-media=(),execution-while-not-rendered=(),execution-while-out-of-viewport=(),fullscreen=(),geolocation=(),gyroscope=(),keyboard-map=(),magnetometer=(),microphone=(),midi=(),navigation-override=(),payment=(),picture-in-picture=(),publickey-credentials-get=(),screen-wake-lock=(),sync-xhr=(),usb=(),web-share=(),xr-spatial-tracking=()
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Significantly strengthen CSP directives

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