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 |
|---|---|---|---|
| bowlersmart.com | #114,587 | BigScoots, Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| logtail.com | #114,609 | AOS, Better Uptime, ChatGPT Ads Pixel + 16 more | Find emails |
| agomo.com | #114,619 | Adyen, Amazon Route 53, Bootstrap + 23 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| eminent.com |
| #114,621 |
| Cloudflare, Cloudflare edge/CDN, ConsentMo + 6 more |
| Find emails |
| jtexpress.vn | #114,640 | AOS, Alibaba Cloud CDN, Alibaba Cloud DNS + 18 more | Find emails |
| mauinews.com | #114,652 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| agarz.com | #114,656 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| yaesu.com | #114,668 | ASP.NET, Bootstrap, Fancybox + 5 more | Find emails |
| areacodebase.com | #114,691 | AddThis, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| midwestern.edu | #114,693 | Drupal, Fastly, Google Fonts + 14 more | Find emails |
| adpnut.com | #114,700 | Apache, Bootstrap, Daum + 8 more | Find emails |
| starnet.net.id | #114,706 | Font Awesome, Google Analytics, Google Fonts + 8 more | Find emails |
| bee-link.com | #114,728 | AOS, Bootstrap, Cloudflare edge/CDN + 13 more | Find emails |
| lrqa.com | #114,734 | Azure API Management, Azure DNS, Bootstrap + 10 more | Find emails |
| komu.com | #114,760 | DoubleClick (Google Ads), Google AdSense, Google Fonts + 7 more | Find emails |
| bidvertiser.com | #114,770 | All in One SEO, Amazon (ACM), Amazon Route 53 + 7 more | Find emails |
| celestron.com | #114,839 | Cloudflare edge/CDN, Klaviyo, Let's Encrypt + 8 more | Find emails |
| everhour.com | #114,845 | Amazon CloudFront, Amazon Route 53, Google Analytics + 10 more | Find emails |
| dassault-aviation.com | #114,854 | Imperva, Siteimprove, Varnish + 2 more | Find emails |
| eastvalleytribune.com | #114,857 | Broadstreet, DoubleClick (Google Ads), Font Awesome + 10 more | Find emails |
| hostddns.us | #114,860 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| pestworld.org | #114,867 | ASP.NET, Azure API Management, DigiCert + 11 more | Find emails |
| freegames.com | #114,886 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 2 more | Find emails |
| gptoday.com | #114,900 | AddThis, Clicky, Cloudflare + 14 more | Find emails |
| uploadrar.com | #114,914 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 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-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →