CAPTCHA & Bot Protection
91,344 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9.1%). 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.
Other captcha & bot protection
| # | 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 |
|---|---|---|---|
| snapchat.com | #123 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| apache.org | #125 | Amazon CloudFront, Amazon Route 53, Apache + 17 more | Find emails |
| one.one | #160 | Let's Encrypt, Next.js, Varnish + 1 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| w3.org |
| #184 |
| Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 9 more |
| Find emails |
| taboola.com | #187 | AOS, DigiCert, Fastly + 9 more | Find emails |
| pki.goog | #218 | Google Analytics, Google Fonts, Google Tag Manager + 2 more | Find emails |
| t-online.de | #220 | Amazon (ACM), Amazon CloudFront, Envoy + 2 more | Find emails |
| scorecardresearch.com | #242 | ASP.NET, Amazon Route 53, Google Tag Manager + 5 more | Find emails |
| dnsmadeeasy.com | #291 | Adobe Experience Cloud (Launch), Cloudflare Bot Management, Cloudflare Turnstile + 11 more | Find emails |
| duckdns.org | #295 | Amazon (ACM), Google Analytics, Google Hosted Libraries + 5 more | Find emails |
| media.net | #311 | AWS Lambda, Akamai Edge DNS, Cloudflare edge/CDN + 8 more | Find emails |
| afternic.com | #315 | Adyen, Akamai Bot Manager, Akamai edge/CDN + 24 more | Find emails |
| dailymotion.com | #377 | Amazon (ACM), Amazon CloudFront, Express + 1 more | Find emails |
| netangels.ru | #404 | DDoS-Guard, Let's Encrypt, Mindbox + 4 more | Find emails |
| ip-api.com | #414 | Amazon CloudFront, Bootstrap, Clicky + 4 more | Find emails |
| statista.com | #438 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| g.page | #451 | Google Analytics, Google Fonts, Google Tag Manager + 2 more | Find emails |
| pushy.io | #467 | Amazon (ACM), Bootstrap, Google Analytics + 5 more | Find emails |
| speedtest.net | #476 | Amazon Route 53, Cloudflare edge/CDN, DoubleClick (Google Ads) + 7 more | Find emails |
| time.com | #526 | Fastly, Google Tag Manager, Integral Ad Science + 7 more | Find emails |
| teamviewer.com | #561 | Adobe Experience Cloud (Launch), Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| telegraph.co.uk | #567 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai edge/CDN + 7 more | Find emails |
| sharethrough.com | #594 | AWS Lambda, Amazon CloudFront, Amazon Route 53 + 15 more | Find emails |
| klaviyo.com | #597 | Amazon Route 53, Astro, Cloudflare edge/CDN + 8 more | Find emails |
| cdnvideo.ru | #598 | Bitrix, Bootstrap, Fancybox + 7 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-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →