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 |
|---|---|---|---|
| dns4me.net | #45,245 | Amazon Route 53, Apache, Bootstrap + 10 more | Find emails |
| newddns.com | #45,262 | ASP.NET, Google Fonts, Let's Encrypt + 3 more | Find emails |
| bitbns.com | #45,263 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 17 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| wardow.com |
| #45,297 |
| Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 6 more |
| Find emails |
| brownrice.com | #45,303 | AdRoll, Apache, Bootstrap + 17 more | Find emails |
| nmfn.com | #45,328 | Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Amazon CloudFront + 6 more | Find emails |
| cyberpolygon.com | #45,363 | AOS, Nginx, Yandex Metrica + 2 more | Find emails |
| missouriquiltco.com | #45,364 | Cloudflare edge/CDN, Google Fonts, Let's Encrypt + 8 more | Find emails |
| livhospital.com | #45,408 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| enviou.com.br | #45,424 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 3 more | Find emails |
| ton.com.br | #45,426 | Akamai edge/CDN, Akamai mPulse, Amazon CloudFront + 9 more | Find emails |
| sbtjapan.com | #45,429 | Bootstrap, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| wiline.com | #45,448 | Chatling, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| toloka.to | #45,454 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| macorner.co | #45,480 | Amazon Route 53, Cloudflare edge/CDN, Judge.me + 6 more | Find emails |
| home-appliances.philips | #45,513 | Bazaarvoice, Cloudflare edge/CDN, Let's Encrypt + 7 more | Find emails |
| eastasiaforum.org | #45,537 | AddToAny, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| vitally.io | #45,540 | AWS Lambda, Adobe Fonts (Typekit), Amazon CloudFront + 17 more | Find emails |
| provenwinners.com | #45,543 | AddToAny, Amazon Route 53, Criteo + 11 more | Find emails |
| gaf.com | #45,549 | Adyen, Akamai edge/CDN, Akamai mPulse + 22 more | Find emails |
| kpler.com | #45,550 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 10 more | Find emails |
| therichest.com | #45,569 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| kitapsec.com | #45,638 | Cloudflare, Google Analytics, Google Tag Manager + 4 more | Find emails |
| prefixbox.com | #45,705 | ASP.NET, Bootstrap, DigiCert + 18 more | Find emails |
| ukhost4u.com | #45,710 | Awin, Bootstrap, Cloudflare + 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →