A/B Testing & Personalization
790 of the 1,000,000 top sites in our Tranco top-1M census run AB Tasty (0.1%). An A/B testing and website personalization platform for running experiments and tailoring content to visitors. Detection is homepage-level HTML/header fingerprinting, so a site can run AB Tasty on other pages without it showing here.
Other a/b testing & personalization
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | ubi.com | #1,016 (Tranco) | Find emails |
| 2 | vivo.com | #1,124 (Tranco) | Find emails |
| 3 | wpastra.com | #1,462 (Tranco) | Find emails |
| 4 | nielsen.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| ubi.com | #1,016 | Amazon (ACM), Amazon CloudFront, Microsoft 365 + 3 more | Find emails |
| vivo.com | #1,124 | DigiCert, Google Analytics, Google Optimize + 7 more | Find emails |
| wpastra.com | #1,462 | ActiveCampaign, AdRoll, AddThis + 119 more | Find emails |
| #2,520 (Tranco) |
| Find emails |
| 5 | ubisoft.com | #2,780 (Tranco) | Find emails |
| nielsen.com |
| #2,520 |
| Google Fonts, Google Tag Manager, Let's Encrypt + 11 more |
| Find emails |
| ubisoft.com | #2,780 | Amazon (ACM), Amazon CloudFront, Microsoft 365 + 3 more | Find emails |
| nzherald.co.nz | #3,322 | Akamai edge/CDN, DoubleClick (Google Ads), Google AdSense + 5 more | Find emails |
| smugmug.com | #3,579 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 14 more | Find emails |
| prestashop.com | #3,772 | Ahrefs Analytics, Amazon CloudFront, Amazon S3 + 5 more | Find emails |
| logmein.com | #4,200 | ASP.NET, Akamai Edge DNS, Bootstrap + 10 more | Find emails |
| service-public.fr | #4,996 | Sectigo | Find emails |
| lexisnexis.com | #5,045 | Amazon CloudFront, Google Hosted Libraries, Google Tag Manager + 4 more | Find emails |
| puma.com | #5,348 | Branch, Cloudflare, Fastly + 9 more | Find emails |
| tate.org.uk | #6,486 | Didomi, Fastly, Google Tag Manager + 7 more | Find emails |
| journaldesfemmes.fr | #6,512 | Akamai Edge DNS, AppNexus, Google Analytics + 8 more | Find emails |
| e.leclerc | #7,215 | Didomi, DigiCert, Google Tag Manager + 2 more | Find emails |
| but.fr | #7,260 | Amazon CloudFront, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| athome.co.jp | #7,306 | Amazon CloudFront, Apache, Font Awesome + 6 more | Find emails |
| nanit.com | #7,555 | Amazon Route 53, Attentive, Cloudflare edge/CDN + 14 more | Find emails |
| labanquepostale.fr | #7,739 | TagCommander (Commanders Act), Adobe Experience Manager | Find emails |
| patagonia.com | #7,897 | Akamai Bot Manager, Akamai edge/CDN, Attentive + 14 more | Find emails |
| nrdc.org | #8,164 | Azure DNS, Cloudflare Bot Management, Cloudflare Turnstile + 6 more | Find emails |
| pluxee.app | #8,418 | CSC (Digital Brand Services), ConsentMo, Google Tag Manager + 3 more | Find emails |
| decathlon.in | #8,772 | Amplitude, CSC (Digital Brand Services), Cloudflare edge/CDN + 13 more | Find emails |
| marketscreener.com | #8,783 | Akamai Edge DNS, Akamai edge/CDN, Didomi + 11 more | Find emails |
| beatport.com | #9,679 | Cloudflare, Cloudflare edge/CDN, DigiCert + 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 →