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 |
|---|---|---|---|
| kbr.com | #95,144 | AOS, Amazon CloudFront, CSC (Digital Brand Services) + 20 more | Find emails |
| macmillaneducation.com | #95,195 | Fastly, Google Analytics, Google Fonts + 7 more | Find emails |
| wkkellogg.com | #95,252 | Amazon CloudFront, CSC (Digital Brand Services), Fastly + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| buyabans.com | #95,264 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| fayupedia.id | #95,296 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 5 more | Find emails |
| onu.edu | #95,304 | Bootstrap, Drupal, Fastly + 11 more | Find emails |
| vat.gov.bd | #95,333 | Fancybox, cdnjs, jQuery | Find emails |
| ilvesfoorumi.com | #95,352 | ConsentMo, DoubleClick (Google Ads), Google AdSense + 8 more | Find emails |
| brb.com.br | #95,356 | Elementor, Font Awesome, Google Analytics + 5 more | Find emails |
| mauinow.com | #95,371 | Amazon (ACM), Amazon CloudFront, Apache + 12 more | Find emails |
| clickadu.com | #95,392 | AddToAny, Amazon Route 53, Bootstrap + 18 more | Find emails |
| tourisme-conques.fr | #95,404 | Axeptio, Bootstrap, Font Awesome + 14 more | Find emails |
| kaeuchi.jp | #95,414 | Font Awesome, Google Analytics, Google Fonts + 6 more | Find emails |
| kama.ru | #95,420 | Google Fonts, Nginx, Yandex Metrica + 1 more | Find emails |
| iconpolls.com | #95,427 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| dailycannon.com | #95,428 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| sbg.com.sa | #95,445 | DigiCert, Font Awesome, LiteSpeed + 5 more | Find emails |
| megapixl.com | #95,475 | Amazon Route 53, Bluesky, Google Analytics + 8 more | Find emails |
| hyperoptic.com | #95,478 | Amazon (ACM), Amazon Route 53, Apache + 3 more | Find emails |
| ross-simons.com | #95,481 | Attentive, Cloudflare edge/CDN, Constructor.io + 7 more | Find emails |
| gaz.ru | #95,485 | Google Fonts, Nginx, Yandex Metrica + 1 more | Find emails |
| royalcbd.com | #95,499 | Clicky, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| evilresource.com | #95,511 | Bluesky, Bootstrap, Buy Me a Coffee + 7 more | Find emails |
| sincsports.com | #95,529 | AOS, ASP.NET, Azure API Management + 12 more | Find emails |
| vpnproxy.site | #95,531 | Bootstrap, Cloudflare, Google AdSense + 7 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 →