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 |
|---|---|---|---|
| solarhandel24.de | #80,355 | Cloudflare edge/CDN, GoAffPro, Klaviyo + 8 more | Find emails |
| resa.net | #80,373 | ASP.NET, Amazon Route 53, Font Awesome + 8 more | Find emails |
| angelcam.com | #80,403 | AWS Lambda, Amazon Route 53, Astro + 18 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| cultstore.com |
| #80,444 |
| Cloudflare, Cloudflare edge/CDN, Datadog + 11 more |
| Find emails |
| troposlab.com | #80,446 | Google Site Kit, Google Tag Manager, Google Trust Services + 6 more | Find emails |
| m3db.com | #80,451 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| sex-tjejer.com | #80,452 | Axios, Bootstrap, Cloudflare + 16 more | Find emails |
| trefflust.com | #80,466 | Cloudflare, Cloudflare edge/CDN, Google Trust Services | Find emails |
| postach.io | #80,472 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| rtdbrasil.org.br | #80,477 | Amazon Route 53, Bootstrap, Cloudflare Turnstile + 9 more | Find emails |
| ably.com | #80,494 | Cloudflare, Cloudflare edge/CDN, Gatsby + 11 more | Find emails |
| gtabase.com | #80,500 | AddToAny, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| kfintech.com | #80,503 | AOS, ASP.NET, Bootstrap + 23 more | Find emails |
| bikereg.com | #80,506 | ASP.NET, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| edicomgroup.com | #80,533 | Apache, Bootstrap, Cookiebot + 12 more | Find emails |
| zt.hu | #80,536 | Font Awesome, Google Tag Manager, Laravel + 2 more | Find emails |
| merkal.com | #80,542 | Cloudflare edge/CDN, ConsentMo, Google Tag Manager + 5 more | Find emails |
| platomedical.com | #80,545 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| autoconvert.co.uk | #80,546 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| remarkable.engineering | #80,550 | Let's Encrypt, Next.js, Sanity + 3 more | Find emails |
| footballsaa.com | #80,560 | GoDaddy Website Builder, GoDaddy | Find emails |
| grove.co | #80,566 | Bazaarvoice, Cloudflare, Cloudflare Bot Management + 12 more | Find emails |
| digitel.com.ve | #80,583 | AWS Lambda, Cloudflare edge/CDN, DigiCert + 14 more | Find emails |
| autostat.ru | #80,601 | Fancybox, Google Tag Manager, Mail.ru Analytics (Top100) + 8 more | Find emails |
| bonkerscorner.com | #80,627 | Amazon Route 53, Cloudflare edge/CDN, GoKwik + 11 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 →