CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| gemidos.tv | #8,749 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| distintas.net | #8,810 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| transmit.live | #8,826 | Amazon Route 53, Cloudflare edge/CDN, Google Trust Services + 3 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| linksys.com | #8,888 | AOS, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| tube8.fr | #8,898 | Amazon Route 53, Google Analytics, Google Tag Manager + 3 more | Find emails |
| ncore.pro | #8,925 | Blogger, Cloudflare, Sectigo + 1 more | Find emails |
| hentaimama.io | #8,938 | Cloudflare edge/CDN, Google Fonts, Google Trust Services + 4 more | Find emails |
| happymail.co.jp | #8,976 | Criteo, DigiCert, Google Ads Conversion + 8 more | Find emails |
| druni.es | #8,991 | Amazon Route 53, ConsentMo, Fastly + 11 more | Find emails |
| libramemoria.com | #9,022 | ConsentMo, Google Tag Manager, Meta Pixel + 1 more | Find emails |
| millipiyangoonline.com | #9,059 | Akamai Bot Manager, Akamai Edge DNS, DigiCert + 10 more | Find emails |
| aflamk1.net | #9,067 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| boat-lifestyle.com | #9,071 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| roborock.com | #9,081 | Bazaarvoice, Cloudflare edge/CDN, Google Tag Manager + 7 more | Find emails |
| megapersonals.eu | #9,083 | Bootstrap, Cloudflare, Cloudflare Bot Management + 5 more | Find emails |
| redtube.com.br | #9,192 | Amazon Route 53, DebugBear, Google Tag Manager + 3 more | Find emails |
| arabsex1.com | #9,248 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| ridigital.org.br | #9,296 | ASP.NET, Akamai Edge DNS, Font Awesome + 5 more | Find emails |
| animeshentai.biz | #9,405 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| nature.org | #9,425 | Amazon Route 53, Convert, Google Maps + 6 more | Find emails |
| kantimehealth.net | #9,429 | ASP.NET, Bootstrap, Font Awesome + 4 more | Find emails |
| juegosonce.es | #9,447 | Google Analytics, Google Tag Manager, Ruby on Rails + 3 more | Find emails |
| zone-turf.fr | #9,458 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| readawrite.com | #9,461 | Bootstrap, Google Analytics, Google Fonts + 8 more | Find emails |
| rosszlanyok.hu | #9,467 | Google Analytics, Google Fonts, Google Tag Manager + 5 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →