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 |
|---|---|---|---|
| nishatlinen.com | #9,916 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 6 more | Find emails |
| redlights.be | #9,930 | AddThis, Bootstrap, Font Awesome + 7 more | Find emails |
| bizimhesap.com | #9,942 | ASP.NET, CDN Fonts, Cloudflare + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| yuvideos.com | #9,943 | Bootstrap, ExoClick, Font Awesome + 9 more | Find emails |
| research-panel.jp | #9,947 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| gharsoaps.shop | #9,960 | Cloudflare edge/CDN, GoAffPro, Google Cloud DNS + 12 more | Find emails |
| turskeserije.tv | #9,963 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| quartier-rouge.be | #9,964 | AddThis, Bootstrap, Font Awesome + 7 more | Find emails |
| darknaija.com | #9,966 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 10 more | Find emails |
| war.gov | #9,979 | ASP.NET, Akamai Edge DNS, Bootstrap + 9 more | Find emails |
| scoalarutiera.ro | #10,066 | Cloudflare, Fancybox, Font Awesome + 12 more | Find emails |
| uncenz.com | #10,087 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| megaescort.info | #10,100 | Cloudflare, Cloudflare edge/CDN, Drupal + 5 more | Find emails |
| workupjob.com | #10,129 | AOS, Bootstrap, Cloudflare + 15 more | Find emails |
| marketsandmarkets.com | #10,153 | ASP.NET, Bootstrap, Cloudflare + 15 more | Find emails |
| gaym.com | #10,179 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| avanture.net | #10,191 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 4 more | Find emails |
| cdbaby.com | #10,232 | ASP.NET, Adobe Fonts (Typekit), Bootstrap + 17 more | Find emails |
| myheritage.com | #10,324 | Amazon CloudFront, Apache, ConsentMo + 5 more | Find emails |
| perfectdomain.com | #10,336 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| krisp.ai | #10,342 | Amplitude, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| foxit.com | #10,369 | Adyen, Amazon Advertising, Amazon Route 53 + 36 more | Find emails |
| nic.es | #10,370 | Amazon CloudFront, Apache, ConsentMo + 12 more | Find emails |
| jumpcloud.com | #10,385 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 15 more | Find emails |
| uplynk.com | #10,411 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 9 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 →