CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| 74.ru | #18,055 | DDoS-Guard, Let's Encrypt | Find emails |
| intesasanpaolo.com | #18,057 | AddThis, Meta Pixel, Tealium + 1 more | Find emails |
| youx.xxx | #18,116 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| #18,147 |
| Adobe Experience Cloud (Launch), AppsFlyer, Cloudflare Bot Management + 9 more |
| Find emails |
| raygun.io | #18,151 | AWS Lambda, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| adpone.com | #18,166 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| jazztel.es | #18,232 | Envoy, Google Fonts, Google Tag Manager + 7 more | Find emails |
| subsplash.com | #18,233 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| junaidjamshed.com | #18,251 | Cloudflare edge/CDN, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| asaas.com | #18,306 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| eurostar.com | #18,328 | Amazon Route 53, Didomi, Fastly + 8 more | Find emails |
| merchantos.com | #18,354 | Bizible, Bootstrap, Cloudflare + 15 more | Find emails |
| noip.net | #18,360 | DigiCert, FirstPromoter, Google Fonts + 6 more | Find emails |
| mover.uz | #18,380 | Google Analytics, Google Tag Manager, Nginx + 4 more | Find emails |
| spacenews.com | #18,383 | Google Tag Manager, Google Trust Services, Nginx + 7 more | Find emails |
| unicreditgroup.eu | #18,390 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 4 more | Find emails |
| thenews.com.pk | #18,430 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 9 more | Find emails |
| actalis.it | #18,508 | Font Awesome, Google Tag Manager, Nginx + 3 more | Find emails |
| easyliveauction.com | #18,519 | Algolia, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| diesiedleronline.de | #18,539 | Amazon Route 53, Cloudflare edge/CDN, Drupal + 4 more | Find emails |
| masterfap.net | #18,544 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| maptiler.com | #18,547 | Bluesky, Bootstrap, Cloudflare + 10 more | Find emails |
| electrodepot.fr | #18,553 | Amazon CloudFront, Google Fonts, Magento + 1 more | Find emails |
| melonbooks.co.jp | #18,577 | Font Awesome, Google Analytics, Google Tag Manager + 11 more | Find emails |
| bablosoft.com | #18,588 | Bootstrap, Cloudflare, Font Awesome + 9 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
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 →