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 |
|---|---|---|---|
| parliament.gov.sg | #685,407 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| totallybarcelona.com | #685,659 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| crowngreen1.net | #687,718 | Amazon CloudFront, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| beachbaycottages.com | #687,863 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| mapquest.co.uk | #688,139 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| hri.org.au | #688,213 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| japanleisurehotels.com | #688,299 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| viniou.pt | #688,701 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| mydigitalpublication.co.uk | #689,387 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| bahrainedb.com | #689,413 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| europarcs.com | #689,443 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| ssonetwork.com | #690,081 | AWS WAF, Amazon (ACM), Amazon Route 53 | Find emails |
| bigpineresortcottages.com | #690,679 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| villadelpalmarloreto.com | #691,437 | AWS WAF, Amazon (ACM), Amazon Route 53 + 2 more | Find emails |
| espn.co | #691,503 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| nsnpartsdispatch.com | #692,858 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| smartbuyglasses.com.hk | #693,186 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| aircraftpartssupplier.com | #693,867 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| rfqcentral.com | #693,877 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| industrialsunlimited.com | #694,334 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| visitlakecomoitaly.com | #695,094 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| bachcare.co.nz | #695,907 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| d3baseball.com | #696,022 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| vacationhomelettings.com | #696,637 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| woodsmithplans.com | #696,821 | AWS WAF, Amazon (ACM), Amazon CloudFront + 10 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 →