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 |
|---|---|---|---|
| ceti.pl | #66,097 | Apache, Google Analytics, Let's Encrypt | Find emails |
| placetochat.com | #66,101 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| japansdates.com | #66,118 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| visionias.in |
| #66,134 |
| Amazon (ACM), Amazon Route 53, Apache + 17 more |
| Find emails |
| porngames.games | #66,137 | Bootstrap, Bunny CDN, BunnyCDN + 13 more | Find emails |
| stussy.com | #66,143 | Amazon Route 53, Cloudflare edge/CDN, Global-e + 6 more | Find emails |
| animefenix2.tv | #66,144 | Bootstrap, Bulma, Cloudflare + 13 more | Find emails |
| familiar.co.jp | #66,198 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Google Hosted Libraries + 8 more | Find emails |
| lm.pl | #66,236 | Axios, Google AdSense, Google Analytics + 10 more | Find emails |
| cecile.co.jp | #66,245 | Akamai Bot Manager, Akamai edge/CDN, Apache + 7 more | Find emails |
| golfpass.com | #66,249 | Amazon (ACM), Amazon CloudFront, DoubleClick (Google Ads) + 11 more | Find emails |
| myheritage.es | #66,265 | Amazon CloudFront, Apache, ConsentMo + 5 more | Find emails |
| bus62.ru | #66,276 | Apache, Google Maps, Leaflet + 7 more | Find emails |
| slj.com | #66,295 | AddToAny, Amazon (ACM), Amazon Route 53 + 18 more | Find emails |
| name.am | #66,307 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 21 more | Find emails |
| chromeenterprise.google | #66,312 | Google Cloud DNS, Google Trust Services | Find emails |
| ift.org | #66,315 | ASP.NET, AdRoll, Azure API Management + 18 more | Find emails |
| k-id.com | #66,355 | AWS Lambda, Algolia, Amazon CloudFront + 20 more | Find emails |
| briscoes.co.nz | #66,358 | Fastly, Let's Encrypt, Microsoft 365 + 1 more | Find emails |
| innovamarketinsights360.com | #66,373 | Amazon (ACM), Amazon Route 53, Microsoft Clarity + 3 more | Find emails |
| chroniclebooks.com | #66,376 | Attentive, Cloudflare edge/CDN, ConsentMo + 11 more | Find emails |
| bytbil.com | #66,401 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| redtube.net | #66,406 | Amazon Route 53, DebugBear, Feedburner + 4 more | Find emails |
| cambridgema.gov | #66,422 | Adobe Fonts (Typekit), Bluesky, DigiCert + 10 more | Find emails |
| betensured.com | #66,451 | Bootstrap, Cloudflare, Cloudflare Bot Management + 23 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 →