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.
| # | 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 |
|---|---|---|---|
| sonder.com | #149,250 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bristoluniversitypressdigital.com | #149,537 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| allright.com | #149,852 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| trustoo.nl | #150,086 | AWS WAF, Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| veluxusa.com | #150,199 | AWS WAF, Amazon CloudFront, CSC (Digital Brand Services) + 2 more | Find emails |
| herworld.com | #150,202 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| silhouette.com | #150,232 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| unisportstore.com | #150,233 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| adventure-life.com | #150,615 | AWS WAF, Amazon (ACM), Amazon Route 53 + 12 more | Find emails |
| doubtnut.com | #150,765 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| adzuna.es | #151,148 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| minmote.no | #151,198 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| yesim.app | #151,727 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| orientalinsurance.org.in | #151,838 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 1 more | Find emails |
| knowde.com | #151,919 | Amazon CloudFront, Amazon Route 53, Fastly + 5 more | Find emails |
| huggingface.com | #151,986 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| treehouserentals.com | #152,890 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| listamais.com.br | #153,086 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bookingexperts.eu | #153,704 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| alldayshirts.com | #153,816 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| betsafe.lv | #153,902 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| ifpr.edu.br | #154,214 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| salonkee.be | #154,522 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| eventbrite.hk | #154,775 | AWS WAF, Amazon (ACM), Amazon CloudFront + 18 more | Find emails |
| arknets.co.jp | #154,913 | AWS WAF, Amazon CloudFront, 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 →