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 |
|---|---|---|---|
| byowner.com | #61,947 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 17 more | Find emails |
| lectricebikes.com | #61,951 | Adobe Fonts (Typekit), Attentive, Bootstrap + 9 more | Find emails |
| embedded.com | #61,962 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| wordtracker.com | #61,975 | Amazon Route 53, FirstPromoter, Font Awesome + 4 more | Find emails |
| eduzz.com | #61,977 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 17 more | Find emails |
| buzzfile.com | #61,986 | ASP.NET, AddThis, Bootstrap + 11 more | Find emails |
| fanfics.me | #62,032 | Let's Encrypt, LiveInternet (Yadro), Nginx + 5 more | Find emails |
| pnina.ps | #62,036 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| webce.com | #62,042 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| outgrow.co | #62,046 | AddToAny, Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| lephoceen.fr | #62,071 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 8 more | Find emails |
| weszlo.com | #62,109 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| youriguide.com | #62,124 | Amazon CloudFront, Amazon Route 53, Google Fonts + 6 more | Find emails |
| coolstuffinc.com | #62,142 | Ahrefs Analytics, Apache, Cloudinary + 11 more | Find emails |
| myjobmag.com | #62,158 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| economipedia.com | #62,217 | Ahrefs Analytics, Bootstrap, Cloudflare + 8 more | Find emails |
| healthnet.com | #62,220 | AddToAny, Adobe Experience Cloud (Launch), Amazon (ACM) + 22 more | Find emails |
| zonatmo.org | #62,221 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| quizzclub.com | #62,222 | ASP.NET, Azure DNS, Google AdSense + 8 more | Find emails |
| teamleader.eu | #62,228 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 8 more | Find emails |
| omikuji-do.com | #62,233 | Google AdSense, Google Analytics, Google Tag Manager + 7 more | Find emails |
| zulip.com | #62,264 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| futbolowo.pl | #62,266 | DoubleClick (Google Ads), Font Awesome, Google AdSense + 10 more | Find emails |
| green-acres.com | #62,279 | ASP.NET, ConsentMo, Google Tag Manager + 6 more | Find emails |
| iclei.org | #62,281 | Bluesky, Cloudflare, Cloudflare Web Analytics + 18 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 →