DNS Gurus
Cached · just now
82/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 20
Let's Encrypt logo Let's Encrypt Adobe Fonts (Typekit) logo Adobe Fonts (Typekit) Amazon S3 logo Amazon S3 Cloudflare CDNJS logo Cloudflare CDNJS Cloudflare Workers logo Cloudflare Workers Font Awesome logo Font Awesome Fontshare logo Fontshare GitHub logo GitHub Google API JS Client logo Google API JS Client Google Search logo Google Search Google Static File Front End logo Google Static File Front End jQuery logo jQuery jsDelivr logo jsDelivr OpenAI logo OpenAI OpenStreetMap logo OpenStreetMap unpkg logo unpkg Yandex logo Yandex Yandex Tools logo Yandex Tools YouTube logo YouTube Google Cloud logo Google Cloud

Certificate Information

Subject
CN=*.wikipedia.org
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
February 06, 2026
Valid Until
May 07, 2026 29 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
34:61:AA:F3:0B:87:E6:FF:B7:49:69:AE:7A:96:EF:A4:E8:E1:C6:A2:A3:9A:21:3E:D3:AB:D5:D1:7D:E9:27:9F
Alternative Names
41 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=106384710; includeSubDomains; preload
Content-Security-Policy
GitHub logo
Basic
default-src; object-src; report-uri Analyze
Content-Security-Policy-Report-Only
Basic
script-src; default-src; style-src; +2 more Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • 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