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 |
|---|---|---|---|
| driveseed.org | #75,525 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| gearset.com | #75,532 | Amplitude, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| stata.com | #75,543 | Adobe Fonts (Typekit), Bluesky, Bootstrap + 17 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| daddario.com | #75,544 | Cloudflare edge/CDN, Klaviyo, Let's Encrypt + 4 more | Find emails |
| stibee.com | #75,545 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| nhmrc.gov.au | #75,550 | Akamai Bot Manager, Akamai edge/CDN, Azure DNS + 7 more | Find emails |
| orgasmatrix.com | #75,590 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| clubz.bg | #75,592 | Apache, DoubleClick (Google Ads), Google Analytics + 10 more | Find emails |
| urait.ru | #75,593 | Bootstrap, Google Analytics, Google Fonts + 9 more | Find emails |
| buy-spares.ie | #75,595 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| fieldeffect.net | #75,621 | Google Analytics, Google Cloud, Google Fonts + 4 more | Find emails |
| mysociety.org | #75,631 | Backbone.js, Bluesky, Google Analytics + 12 more | Find emails |
| pifyapp.com | #75,633 | Cloudflare, Cloudflare edge/CDN, Ionic Framework + 5 more | Find emails |
| ukraine-gta.com.ua | #75,668 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| orsted.com | #75,687 | ASP.NET, AppDynamics, CSC (Digital Brand Services) + 9 more | Find emails |
| bacakomik.my | #75,688 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| blueyonder.com | #75,692 | Adyen, Azure Front Door, Bizible + 27 more | Find emails |
| planetaltig.com | #75,712 | ASP.NET, Amazon (ACM), Amazon Route 53 + 7 more | Find emails |
| klar.mx | #75,717 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 13 more | Find emails |
| sharda.ac.in | #75,731 | Amazon (ACM), Amazon Route 53, Apache + 9 more | Find emails |
| cognitivemarketresearch.com | #75,733 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| 4download.net | #75,748 | Apache, Blogger, DataLife Engine + 8 more | Find emails |
| divainparfums.com | #75,761 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 2 more | Find emails |
| crifhighmark.com | #75,764 | Akamai Edge DNS, Google Fonts, Google Tag Manager + 4 more | Find emails |
| fremdgehen69.com | #75,783 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 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 →