CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). Google's CAPTCHA/bot-scoring widget, the most widely deployed CAPTCHA by far. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | apache.org | #125 (Tranco) | Find emails |
| 3 | one.one | #160 (Tranco) | Find emails |
| 4 | w3.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| tlauncher.ru | #38,760 | DDoS-Guard, PHP, reCAPTCHA v2 | Find emails |
| socastsrm.com | #38,761 | Amazon (ACM), Apache, Bluesky + 14 more | Find emails |
| cashbackeasy.com | #38,799 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| geo-online.co.jp |
| #38,804 |
| Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 10 more |
| Find emails |
| zan.top | #38,831 | Alibaba Cloud DNS, Alipay, Google Analytics + 6 more | Find emails |
| hostcreators.sk | #38,836 | Font Awesome, Google Fonts, Google Maps + 7 more | Find emails |
| technavio.com | #38,847 | Amazon Route 53, Apache, Bootstrap + 9 more | Find emails |
| sovrn.com | #38,874 | Adobe Fonts (Typekit), Adyen, Amazon CloudFront + 27 more | Find emails |
| techbang.com | #38,875 | Amazon Route 53, DigiCert, Feedburner + 12 more | Find emails |
| blockclubchicago.org | #38,881 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 11 more | Find emails |
| uplandsoftware.com | #38,883 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 12 more | Find emails |
| linux.org.au | #38,915 | Apache, Bluesky, CleanTalk + 10 more | Find emails |
| weawow.com | #38,916 | Amazon (ACM), Amazon Route 53, Apache + 7 more | Find emails |
| video-bookmark.com | #38,920 | Blogger, Let's Encrypt, Namecheap + 5 more | Find emails |
| coned.com | #38,929 | DigiCert, Google Fonts, Google Tag Manager + 5 more | Find emails |
| easybroker.com | #38,930 | Amazon (ACM), Amazon Route 53, Cloudflare edge/CDN + 12 more | Find emails |
| lcl.fr | #38,955 | Akamai Edge DNS, Express, Sectigo + 1 more | Find emails |
| extremeterrain.com | #39,004 | ASP.NET, Affirm, Braintree + 15 more | Find emails |
| smartraveller.gov.au | #39,021 | Akamai Bot Manager, Akamai edge/CDN, Cloudflare + 3 more | Find emails |
| macfound.org | #39,026 | AOS, ASP.NET, Cloudflare + 14 more | Find emails |
| paymo.ru | #39,032 | Bootstrap, Cloudflare, Let's Encrypt + 5 more | Find emails |
| sqlservercentral.com | #39,033 | Amazon Route 53, Google Analytics, Google Fonts + 12 more | Find emails |
| joinroot.com | #39,040 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 11 more | Find emails |
| qortex.ai | #39,067 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| southalabama.edu | #39,087 | Apache, Bootstrap, Google Fonts + 5 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →