DNS Gurus
Cached · just now
90/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 14
AWS CloudFront logo AWS CloudFront Google Trust logo Google Trust AWS logo AWS Amazon S3 logo Amazon S3 Google Analytics logo Google Analytics Google Fonts logo Google Fonts Google Static File Front End logo Google Static File Front End Google Tag Manager logo Google Tag Manager Persona logo Persona Sierra logo Sierra Vimeo logo Vimeo YouTube logo YouTube Zendesk logo Zendesk Google Cloud logo Google Cloud

Certificate Information

Subject
CN=sierra.ai
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
March 26, 2026
Valid Until
June 24, 2026 85 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
1F:29:7B:0A:3F:8F:B3:98:FA:BB:38:70:C0:A8:66:12:CD:AA:D3:13:37:6D:CD:B3:EA:2A:F3:E9:D8:74:33:EC
Alternative Names
6 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
AWS CloudFront logo
Good
base-uri; default-src; script-src; +7 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Strengthen CSP by removing 'unsafe-eval'
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • 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