A/B Testing & Personalization
538 of the 1,000,000 top sites in our Tranco top-1M census run Dynamic Yield (0.1%). An ecommerce personalization and A/B-testing platform (Mastercard's). Detection is homepage-level HTML/header fingerprinting, so a site can run Dynamic Yield on other pages without it showing here.
Other a/b testing & personalization
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | hp.com | #270 (Tranco) | Find emails |
| 2 | yotpo.com | #2,277 (Tranco) | Find emails |
| 3 | nespresso.com | #4,938 (Tranco) | Find emails |
| 4 | obi.de |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| mazda.sk | #893,290 | Amazon Route 53, Dynatrace, Google Tag Manager + 1 more | Find emails |
| ullapopken.ro | #900,000 | Akamai Edge DNS, Akamai edge/CDN, Akamai mPulse + 6 more | Find emails |
| tanagra.me | #919,782 | Cloudflare, Cloudflare edge/CDN, Datadog + 8 more | Find emails |
| #5,993 (Tranco) |
| Find emails |
| 5 | sklum.com | #6,928 (Tranco) | Find emails |
| nordicfeel.se |
| #920,982 |
| Adobe Fonts (Typekit), Cookiebot, Fastly + 9 more |
| Find emails |
| haix.com | #924,569 | Font Awesome, Google Analytics, Google Fonts + 11 more | Find emails |
| fairmont.fr | #925,088 | Adobe Experience Manager Edge Delivery (Helix RUM), CSC (Digital Brand Services), DigiCert + 5 more | Find emails |
| dereklam.com | #954,822 | Attentive, Azure DNS, Cloudflare edge/CDN + 8 more | Find emails |
| mydays.at | #961,369 | Amazon CloudFront, Amazon Route 53, Cloudflare edge/CDN + 8 more | Find emails |
| jochen-schweizer.at | #967,093 | Amazon CloudFront, Amazon Pay, Cloudflare edge/CDN + 9 more | Find emails |
| ediblearrangements.ca | #970,745 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 6 more | Find emails |
| dsautomobiles.co.uk | #973,237 | Adobe Advertising Cloud, Adobe Audience Manager, Adobe Experience Cloud (Launch) + 5 more | Find emails |
| nordicchoicehotels.se | #989,516 | Contentful, Fastly, Google Cloud DNS + 2 more | Find emails |
| alditalk.com | #996,058 | Apache, DigiCert, Google Fonts + 5 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →