CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (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 | 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 |
|---|---|---|---|
| hostingperte.it | #42,206 | Bootstrap, CookieYes, Google Fonts + 14 more | Find emails |
| techtitute.com | #42,211 | ASP.NET, Azure API Management, Cloudflare + 5 more | Find emails |
| simplenote.com | #42,220 | Google Trust Services, Nginx, WordPress + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| maxer.com | #42,229 | AdRoll, Adobe Fonts (Typekit), Apache + 10 more | Find emails |
| r-agent.com | #42,236 | Adyen, Amazon (ACM), Amazon CloudFront + 15 more | Find emails |
| sorenson.com | #42,262 | Cloudflare Bot Management, Cloudflare edge/CDN, Foundation + 5 more | Find emails |
| mecca.com | #42,269 | Adyen, Amazon (ACM), Amazon CloudFront + 14 more | Find emails |
| saga.co.uk | #42,282 | Adobe Experience Cloud (Launch), Amazon Route 53, Cloudflare edge/CDN + 12 more | Find emails |
| quic.cloud | #42,287 | Amazon Route 53, Bootstrap, Chart.js + 9 more | Find emails |
| hublot.com | #42,290 | AB Tasty, Akamai Bot Manager, Akamai Edge DNS + 8 more | Find emails |
| agriculture.gov.au | #42,298 | Akamai Bot Manager, Akamai edge/CDN, Azure DNS + 6 more | Find emails |
| ptcloud.de | #42,313 | Apache, Google Analytics, Google Tag Manager + 5 more | Find emails |
| technode.com | #42,315 | Cloudflare, Google Analytics, Google Site Kit + 10 more | Find emails |
| architecture.com | #42,353 | ASP.NET, Amazon CloudFront, Cloudflare Bot Management + 6 more | Find emails |
| en-hyouban.com | #42,354 | Amazon (ACM), Amazon Route 53, Google Analytics + 3 more | Find emails |
| haulmont.com | #42,365 | Google Tag Manager, Let's Encrypt, Microsoft 365 + 4 more | Find emails |
| alderongames.com | #42,395 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| ingate.ru | #42,397 | Bitrix, Google Tag Manager, Mail.ru Analytics (Top100) + 4 more | Find emails |
| momcozy.com | #42,433 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| rjf.com | #42,438 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 5 more | Find emails |
| examsoft.com | #42,483 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| onemileatatime.com | #42,484 | Amazon Advertising, CJ Affiliate, Cloudflare + 14 more | Find emails |
| shoeshowmega.com | #42,502 | Amazon Route 53, Cloudflare edge/CDN, GoDaddy Seal + 8 more | Find emails |
| hercampus.com | #42,517 | AddToAny, Adobe Fonts (Typekit), Cloudflare + 14 more | Find emails |
| whatcar.com | #42,520 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →