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 |
|---|---|---|---|
| bibletools.org | #95,170 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| stihl.de | #95,483 | AWS WAF, Amazon CloudFront, Microsoft 365 | Find emails |
| lensrentals.com | #95,501 | AWS WAF, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| adzuna.it |
| #95,532 |
| AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more |
| Find emails |
| eventbrite.com.ar | #96,076 | AWS WAF, Amazon (ACM), Amazon CloudFront + 17 more | Find emails |
| hsbc.co.in | #96,224 | Amazon CloudFront, Apache, DigiCert + 3 more | Find emails |
| justbats.com | #96,519 | AWS WAF, Amazon CloudFront, Amazon Route 53 | Find emails |
| perpay.com | #96,529 | AWS Lambda, Adobe Fonts, Adobe Fonts (Typekit) + 13 more | Find emails |
| fvrentals.com | #96,916 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| jobsyn.org | #97,423 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| landcareresearch.co.nz | #97,698 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| betterhelp.com.au | #98,133 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| adzuna.ca | #98,445 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| sun-ski.com | #98,652 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| watchfinder.co.uk | #98,736 | AWS WAF, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| eventbrite.com.br | #98,907 | AWS WAF, Amazon (ACM), Amazon CloudFront + 18 more | Find emails |
| hi1222.com | #98,925 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| dorothyperkins.com | #99,040 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| e-mansion.co.jp | #99,252 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| sonora.id | #99,785 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| mwave.com.au | #99,994 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| 330756.com | #100,231 | ASP.NET, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| walletnest69217554.com | #100,852 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| shviet999.me | #101,594 | ASP.NET, Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| typology.com | #101,727 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 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 →