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 |
|---|---|---|---|
| schoolobjects.com | #108,505 | Amazon (ACM), Amazon Route 53, Google Fonts + 2 more | Find emails |
| cpscentral.com | #108,582 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| toadworld.com | #108,856 | AWS WAF, Amazon CloudFront, Azure DNS + 1 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| lgcstandards.com | #108,928 | AWS WAF, Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| secretnyc.co | #109,044 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| flair.be | #109,395 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| lahora.com.ec | #109,802 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| a16zcrypto.com | #109,938 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 5 more | Find emails |
| dja.com | #110,078 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| tempurpedic.com | #110,336 | AWS WAF, Amazon (ACM), Amazon CloudFront | Find emails |
| msha.gov | #110,572 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| foundationmedicine.com | #110,752 | Algolia, Amazon CloudFront, Cloudflare Web Analytics + 16 more | Find emails |
| iwantgreatcare.org | #110,766 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| snowtrace.io | #110,788 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| werally.com | #111,049 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| espn.nl | #111,064 | AWS WAF, Amazon CloudFront, Sectigo | Find emails |
| reservix.com | #111,095 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| morningstar.co.uk | #111,149 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| minimodel.jp | #111,358 | AWS WAF, All in One SEO, Amazon (ACM) + 10 more | Find emails |
| elevify.com | #111,425 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| audiostock.jp | #111,695 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| cabinns.com | #111,924 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| competitivecyclist.com | #112,042 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| lincolnshirelive.co.uk | #112,238 | AWS WAF, Amazon (ACM), Amazon CloudFront + 16 more | Find emails |
| apexsql.com | #112,291 | AWS WAF, Amazon CloudFront, Azure DNS + 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 →