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 |
|---|---|---|---|
| esignal.co.kr | #99,065 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| goldenagesouls.com | #99,102 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| planes.cz | #99,140 | Apache, Google Analytics, Google Hosted Libraries + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| pps.org | #99,147 | AWS Lambda, Bluesky, Cloudflare edge/CDN + 8 more | Find emails |
| buhlergroup.com | #99,177 | Adobe Experience Cloud (Launch), Amazon CloudFront, Apache + 3 more | Find emails |
| izap24.kz | #99,215 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| soundstripe.com | #99,217 | Adobe Fonts (Typekit), ChatGPT Ads Pixel, Cloudflare Bot Management + 18 more | Find emails |
| espc.com | #99,233 | Amazon Route 53, ChatGPT Ads Pixel, DoubleClick (Google Ads) + 5 more | Find emails |
| meendo.com | #99,277 | Bootstrap, Cloudflare, Google Analytics + 6 more | Find emails |
| globalworkplaceanalytics.com | #99,279 | Google Analytics, Google Fonts, Google Site Kit + 8 more | Find emails |
| dodparts.com | #99,298 | Apache, reCAPTCHA v2, GoDaddy | Find emails |
| pmaktif.com | #99,313 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| richarddawkins.net | #99,314 | Adobe Fonts (Typekit), Backbone.js, Bootstrap + 14 more | Find emails |
| ogcnice.com | #99,328 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 9 more | Find emails |
| lacoste.co.za | #99,339 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 7 more | Find emails |
| macrolibrarsi.it | #99,352 | Google Identity Services, Meta Pixel, Nginx + 3 more | Find emails |
| afribobo.com | #99,354 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| phaxio.com | #99,367 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| pny.com | #99,374 | AOS, ASP.NET, Adobe Fonts (Typekit) + 18 more | Find emails |
| auran.com | #99,387 | Apache, Cloudflare, Fancybox + 10 more | Find emails |
| kfgo.com | #99,388 | Apache, Bluesky, Bootstrap + 15 more | Find emails |
| earnvids.com | #99,389 | Bootstrap, Chatra, Cloudflare + 9 more | Find emails |
| fiberoptics4sale.com | #99,416 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 7 more | Find emails |
| confilegal.com | #99,421 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| feedadnova.site | #99,429 | Bootstrap, Django, Font Awesome + 8 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 →