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 |
|---|---|---|---|
| astra-honda.com | #65,814 | Azure DNS, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| dcrainmaker.com | #65,816 | AvantLink, DoubleClick (Google Ads), Google Publisher Tag + 9 more | Find emails |
| smoothr.de | #65,822 | AWS Lambda, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| sca.auction | #65,825 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 2 more | Find emails |
| netmera-web.com | #65,826 | GoDaddy Website Builder, GoDaddy | Find emails |
| bryant.com | #65,837 | ASP.NET, AddThis, Axios + 15 more | Find emails |
| avocatnet.ro | #65,854 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| disturbia.us | #65,863 | Bugsnag, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| coveralls.io | #65,864 | Adobe Fonts (Typekit), Amazon CloudFront, Atlassian Cloud + 17 more | Find emails |
| cleverbridge.com | #65,903 | Algolia, Amazon CloudFront, Atlassian Cloud + 18 more | Find emails |
| ieltsonlinetests.com | #65,904 | AddToAny, Drupal, Font Awesome + 9 more | Find emails |
| babacasino.com | #65,926 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 9 more | Find emails |
| xrares.com | #65,928 | Bootstrap, Cloudflare, Cloudflare Turnstile + 8 more | Find emails |
| gomez.pl | #65,929 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 7 more | Find emails |
| is-telecom.ru | #65,956 | All in One SEO, Bootstrap, Fancybox + 9 more | Find emails |
| blood.ru | #65,957 | Bitrix, PHP, jQuery + 2 more | Find emails |
| memeraki.com | #65,970 | Algolia, Cloudflare edge/CDN, GetSiteControl + 9 more | Find emails |
| travelguard.com | #66,002 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Amazon CloudFront + 7 more | Find emails |
| balticom.lv | #66,030 | Google Tag Manager, Nginx, Sectigo + 1 more | Find emails |
| webhostnepal.com | #66,040 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 18 more | Find emails |
| moi.gov.kw | #66,045 | ASP.NET, Bootstrap, Font Awesome + 9 more | Find emails |
| foley.com | #66,061 | AddToAny, Adobe Fonts (Typekit), Cloudflare Bot Management + 10 more | Find emails |
| e-earphone.jp | #66,067 | Amazon Route 53, Cloudflare edge/CDN, Google Hosted Libraries + 6 more | Find emails |
| ichgcp.net | #66,068 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 more | Find emails |
| electronicsweekly.com | #66,090 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Amazon (ACM) + 14 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →