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 |
|---|---|---|---|
| jazzguitar.be | #113,727 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| hacc.edu | #113,730 | Amazon (ACM), Apache, Bootstrap + 13 more | Find emails |
| intek-m.ru | #113,734 | AOS, Bootstrap, Google Analytics + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| kbhome.com |
| #113,742 |
| Azure API Management, CSC (Digital Brand Services), Cloudflare edge/CDN + 9 more |
| Find emails |
| vtxmail.ch | #113,751 | Apache, DigiCert, Google Analytics + 1 more | Find emails |
| messinahembry.com | #113,753 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 7 more | Find emails |
| easydns.info | #113,765 | AddToAny, Adobe Fonts (Typekit), Apache + 9 more | Find emails |
| onehub.com | #113,770 | Cloudflare edge/CDN, Font Awesome, GitBook + 17 more | Find emails |
| supercast.com | #113,774 | AWS Lambda, Amazon Route 53, Atlassian Statuspage + 9 more | Find emails |
| winna.com | #113,792 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 5 more | Find emails |
| greenstuffworld.com | #113,801 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| greenbuildingadvisor.com | #113,802 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| e-2.at | #113,808 | Google Analytics, Gravatar, Let's Encrypt + 2 more | Find emails |
| jackson.com | #113,818 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Akamai Bot Manager + 10 more | Find emails |
| dailyitem.com | #113,834 | Blockthrough, Confiant, Empower Local + 13 more | Find emails |
| 7sage.com | #113,835 | Amazon (ACM), Amazon Route 53, ImageKit | Find emails |
| android-hilfe.de | #113,837 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| keepsolid.com | #113,839 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| webnode.nl | #113,849 | Amazon Route 53, Convert, DoubleClick (Google Ads) + 7 more | Find emails |
| kokugakuin.ac.jp | #113,874 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 5 more | Find emails |
| beckmancoulter.com | #113,877 | Amazon (ACM), Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| tboholidays.com | #113,931 | ASP.NET, Akamai Bot Manager, Akamai edge/CDN + 14 more | Find emails |
| proweb.net | #113,932 | Bootstrap, Font Awesome, Foundation + 11 more | Find emails |
| axaxl.com | #113,934 | Akamai Edge DNS, Azure API Management, Azure Front Door + 6 more | Find emails |
| ucg.org | #113,943 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →