T Themerella
Technology

Fastly detection

Category: Hosting / CDN. Themerella detects this technology from public website evidence and shows confidence in the report.

Safe public URL scan. Results include technology evidence, SEO checks, security headers, accessibility basics, and a developer fix list.

Detection evidence

How Themerella detects Fastly

  • server or via headers referencing Fastly
  • x-served-by response headers
  • x-cache and x-cache-hits cache indicators
Report value

Every detected technology should include category, confidence, evidence, and practical risk/context so the result is useful beyond logo recognition.

False-positive boundary

What to verify before acting on Fastly evidence

  • x-served-by can appear in other proxy setups.
  • Multi-CDN stacks may require several header signals.
Next workflow
  • Verify Fastly edge evidence.
  • Check cache behavior, redirects, and security headers.
  • Use reports to distinguish CDN issues from origin page issues.