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 |
|---|---|---|---|
| hayhouse.com | #117,113 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| tst.jus.br | #117,581 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| varoom.com | #117,712 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| transfermarkt.pe |
| #117,788 |
| AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more |
| Find emails |
| buscalibre.com.ar | #117,809 | Amazon (ACM), Amazon Route 53, Google Identity Services + 3 more | Find emails |
| espnfc.com | #117,874 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| dxdelivery.com | #117,878 | AWS WAF, Amazon CloudFront, DigiCert + 1 more | Find emails |
| nationaltrail.co.uk | #117,899 | AWS WAF, Amazon CloudFront, Bootstrap + 10 more | Find emails |
| stayforlong.com | #118,228 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| cheshire-live.co.uk | #118,454 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| ownerdirect.com | #118,703 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| webbeds.com | #119,107 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| ufasta.edu.ar | #119,115 | AWS WAF, Amazon Route 53, Amazon Web Services | Find emails |
| vkb.de | #119,601 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| instabase.jp | #119,851 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| wattbuy.com | #119,883 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| newsflare.com | #120,124 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| eventbrite.pt | #120,353 | AWS WAF, Amazon (ACM), Amazon CloudFront + 19 more | Find emails |
| jakartanotebook.com | #120,538 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| redfin.ca | #120,813 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| token.io | #121,025 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| knotts.com | #121,084 | AB Tasty, Amazon Route 53, Google Tag Manager + 7 more | Find emails |
| viagogo.de | #121,151 | Affirm, Amazon (ACM), Amazon CloudFront + 10 more | Find emails |
| transfermarkt.at | #121,217 | AWS WAF, Amazon CloudFront, Let's Encrypt + 1 more | Find emails |
| aerospaceorbit.com | #121,260 | AWS WAF, Amazon (ACM), Amazon Web Services | 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 →