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 |
|---|---|---|---|
| missoulian.com | #48,673 | 33Across, Advertising.com, Amazon Advertising + 44 more | Find emails |
| tzulo.com | #48,675 | Apache, Font Awesome, Google Analytics + 4 more | Find emails |
| domino.com | #48,677 | Adobe Fonts (Typekit), Amazon Route 53, Chartbeat + 11 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| wwdjapan.com | #48,698 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 18 more | Find emails |
| 72.ru | #48,708 | DDoS-Guard, Let's Encrypt | Find emails |
| presave.io | #48,714 | AOS, Amazon (ACM), Bootstrap + 16 more | Find emails |
| tichyseinblick.de | #48,721 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 12 more | Find emails |
| memed.com.br | #48,730 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 13 more | Find emails |
| rallyhouse.com | #48,751 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| rhodeskin.com | #48,765 | Cloudflare edge/CDN, Convert, Google Ads Conversion + 15 more | Find emails |
| buzzerbeater.com | #48,767 | ASP.NET, Bootstrap, Cloudflare + 17 more | Find emails |
| mdlive.com | #48,780 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 12 more | Find emails |
| gagadget.com | #48,784 | Admixer, AvantLink, Django + 11 more | Find emails |
| gta5grand.com | #48,797 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| eroski.es | #48,804 | ASP.NET, Bootstrap, DigiCert + 13 more | Find emails |
| paddock-gp.com | #48,815 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| webcitation.org | #48,817 | Amazon (ACM), Amazon Route 53, Apache + 3 more | Find emails |
| tio.ch | #48,821 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 12 more | Find emails |
| wildlifetrusts.org | #48,845 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Turnstile + 13 more | Find emails |
| showrss.info | #48,850 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 5 more | Find emails |
| moakt.com | #48,851 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| klsescreener.com | #48,885 | Bootstrap, Chart.js, Cloudflare + 23 more | Find emails |
| bizbergthemes.com | #48,922 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| freeuk.com | #48,930 | Adobe Fonts (Typekit), CookieFirst, Drupal + 2 more | Find emails |
| midtrans.com | #48,938 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 19 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →