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 |
|---|---|---|---|
| g5.com | #78,636 | Amazon Advertising, DigiCert, Google Fonts + 11 more | Find emails |
| plumgoodness.com | #78,656 | Cloudflare edge/CDN, GoKwik, Google Ads Conversion + 11 more | Find emails |
| gplinks.co | #78,686 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 20 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| blackstoneproducts.com | #78,691 | AdRoll, Adobe Fonts (Typekit), Bazaarvoice + 13 more | Find emails |
| sbp.org.pk | #78,711 | AOS, Cloudflare edge/CDN, Fancybox + 7 more | Find emails |
| qive.com.br | #78,714 | AWS Lambda, Cloudflare edge/CDN, Google Cloud DNS + 8 more | Find emails |
| petrolofisi.com.tr | #78,721 | DigiCert, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| wonderproxy.com | #78,725 | AOS, Apache, Ghost + 11 more | Find emails |
| homecredit.co.in | #78,739 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 21 more | Find emails |
| zeusadx.com | #78,742 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| mcgrocer.com | #78,745 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 8 more | Find emails |
| unica.edu.pe | #78,754 | ASP.NET, Apache, Bootstrap + 8 more | Find emails |
| cyclingpro.net | #78,762 | Font Awesome, Google AdSense, Google Analytics + 11 more | Find emails |
| mol.gov.om | #78,781 | ASP.NET, Bootstrap, Chatbase + 14 more | Find emails |
| mazda.mx | #78,789 | ASP.NET, Adobe Experience Cloud (Launch), Akamai edge/CDN + 6 more | Find emails |
| wifi4games.com | #78,798 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| qrz.ru | #78,819 | Bootstrap, Cloudflare, Fancybox + 12 more | Find emails |
| guidewire.com | #78,824 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 15 more | Find emails |
| couples.jp | #78,828 | Amazon (ACM), Amazon Route 53, DoubleClick (Google Ads) + 11 more | Find emails |
| hockeyarena.net | #78,831 | Apache, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| pxcanvasprints.com | #78,841 | Amazon Route 53, Apache, Let's Encrypt + 2 more | Find emails |
| blastscan.io | #78,842 | ASP.NET, Bootstrap, Cloudflare + 10 more | Find emails |
| salty.co.in | #78,869 | Cloudflare, Cloudflare edge/CDN, GoKwik + 8 more | Find emails |
| eid.gov.rs | #78,884 | ASP.NET, DigiCert, Microsoft 365 + 5 more | Find emails |
| nicb.org | #78,906 | AddToAny, Cloudflare, Cloudflare edge/CDN + 14 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 →