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 |
|---|---|---|---|
| discgolfmetrix.com | #69,509 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 5 more | Find emails |
| 1x.com | #69,569 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| youmagine.com | #69,576 | ClickTale (Contentsquare), Google Analytics, Google Fonts + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| chiikawamarket.jp | #69,582 | Cloudflare edge/CDN, Global-e, Let's Encrypt + 5 more | Find emails |
| nuerburgring.de | #69,599 | CookieFirst, DigiCert, Google Analytics + 6 more | Find emails |
| hostupon.com | #69,603 | Apache, Bootstrap, Clicky + 15 more | Find emails |
| pcfactory.cl | #69,607 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| carfind.co.za | #69,631 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| sunderlandecho.com | #69,650 | Cloudflare Bot Management, Cloudflare edge/CDN, Dotmetrics + 10 more | Find emails |
| iso-group.com | #69,652 | ASP.NET, Bootstrap, DigiCert + 9 more | Find emails |
| wfmj.com | #69,657 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 5 more | Find emails |
| actu-environnement.com | #69,663 | Apache, Bluesky, Fancybox + 8 more | Find emails |
| froedtert.com | #69,699 | Adobe Fonts, Adobe Fonts (Typekit), Amazon CloudFront + 15 more | Find emails |
| instahyre.com | #69,711 | AngularJS, Bootstrap, Cloudflare + 14 more | Find emails |
| thivien.net | #69,712 | Apache, Google AdSense, Google Analytics + 5 more | Find emails |
| samaralan.ru | #69,719 | Apache, Fancybox, Mail.ru Analytics (Top100) + 5 more | Find emails |
| torinocronaca.it | #69,723 | AddThis, Amazon (ACM), Amazon CloudFront + 15 more | Find emails |
| qad.com | #69,732 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 12 more | Find emails |
| ex2.com | #69,740 | AOS, Bootstrap, Cloudflare + 26 more | Find emails |
| racknerd.com | #69,747 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| naturalis.nl | #69,778 | Amazon Route 53, ConsentMo, Drupal + 5 more | Find emails |
| b3ta.com | #69,796 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| laura.ca | #69,801 | Adobe Fonts (Typekit), Cloudflare edge/CDN, ConsentMo + 12 more | Find emails |
| vas-hosting.cz | #69,811 | Google Tag Manager, Gravatar, Nginx + 4 more | Find emails |
| zoig.com | #69,862 | Apache, Google Analytics, Google Tag Manager + 3 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 →