CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| rains.com | #101,418 | Cloudflare edge/CDN, Convert, Let's Encrypt + 5 more | Find emails |
| domaincatcher.com | #101,423 | Bootstrap, ConsentMo, Font Awesome + 10 more | Find emails |
| foodtecsolutions.com | #101,453 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| nouvelair.com | #101,457 | Google Tag Manager, Next.js, Nginx + 4 more | Find emails |
| ynhh.org | #101,492 | ASP.NET, Adobe Experience Cloud (Launch), Azure API Management + 9 more | Find emails |
| spolecznosci.net | #101,499 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| brunomedia.ru | #101,500 | Bitrix, Fancybox, JivoChat + 9 more | Find emails |
| plumvillage.org | #101,517 | Amazon Route 53, CookieYes, Google Maps + 7 more | Find emails |
| kdhnews.com | #101,524 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 5 more | Find emails |
| naitreetgrandir.com | #101,538 | ASP.NET, Azure DNS, Font Awesome + 15 more | Find emails |
| uct.cl | #101,568 | Apache, Font Awesome, Google Analytics + 9 more | Find emails |
| ecowas.int | #101,606 | Bootstrap, Google Analytics, Google Fonts + 10 more | Find emails |
| californiapsychics.com | #101,630 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| zentrixads.com | #101,666 | AngularJS, Bootstrap, Express + 16 more | Find emails |
| betfury.com | #101,691 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 3 more | Find emails |
| t35.net | #101,710 | Apache, Cloudflare, Font Awesome + 6 more | Find emails |
| adxnexus.com | #101,741 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| kelikamerat.info | #101,750 | Bootstrap, Drupal, Let's Encrypt + 5 more | Find emails |
| vegogarden.com | #101,799 | Cloudflare, Cloudflare edge/CDN, Intelligems + 6 more | Find emails |
| slicktext.com | #101,823 | Amazon (ACM), Amazon Route 53, Apache + 15 more | Find emails |
| leadcam.com | #101,828 | GoDaddy Website Builder, GoDaddy | Find emails |
| infracom.it | #101,836 | ASP.NET, Bootstrap, Cookiebot + 8 more | Find emails |
| thehut.net | #101,837 | Cloudflare edge/CDN, Fastly, Google Tag Manager + 4 more | Find emails |
| winsupersite.com | #101,843 | Chartbeat, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| sharecast.com | #101,848 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →