CAPTCHA & Bot Protection
3,100 of the 1,000,000 top sites in our Tranco top-1M census run AWS WAF CAPTCHA (0.3%). Amazon's CAPTCHA challenge product, part of AWS WAF's bot-mitigation features. Detection is homepage-level HTML/header fingerprinting, so a site can run AWS WAF CAPTCHA on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | amazon.com | #25 (Tranco) | Find emails |
| 2 | imdb.com | #237 (Tranco) | Find emails |
| 3 | appsflyer.com | #302 (Tranco) | Find emails |
| 4 | amazon.co.uk |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| olx.com.lb | #38,558 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| kfzteile24.de | #38,802 | AWS WAF, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| caiso.com | #38,849 | Amazon CloudFront, Bluesky, Google Tag Manager + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| easybroker.com |
| #38,930 |
| Amazon (ACM), Amazon Route 53, Cloudflare edge/CDN + 13 more |
| Find emails |
| educations.com | #39,056 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| transfermarkt.com.tr | #39,082 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| libro.fm | #39,090 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| rentbyowner.com | #39,143 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| recordstoreday.com | #39,151 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| tiff.net | #39,178 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| skapiec.pl | #39,265 | Amazon CloudFront, Google Tag Manager, Let's Encrypt + 1 more | Find emails |
| jobs.ch | #39,267 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| pillpack.com | #39,330 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| bigfooty.com | #39,677 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| paperswithcode.com | #39,754 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| pepperstone.com | #39,954 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| komeri.com | #39,999 | AWS WAF, Amazon CloudFront | Find emails |
| carfromjapan.com | #40,263 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| nissannews.com | #40,741 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| timeoutdubai.com | #40,840 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| transfermarkt.world | #41,397 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| hsbc.com.mx | #41,678 | Adobe Experience Manager Edge Delivery (Helix RUM), Amazon CloudFront, Apache + 5 more | Find emails |
| cloudcraft.co | #41,708 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 20 more | Find emails |
| bidspotter.com | #41,893 | ASP.NET, Amazon (ACM), Amazon CloudFront + 17 more | Find emails |
| stuller.com | #42,046 | AWS WAF, Amazon (ACM), Amazon Route 53 + 13 more | Find emails |
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 →