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 |
|---|---|---|---|
| timescar.jp | #63,542 | Akamai Edge DNS, Apache, Google Tag Manager + 3 more | Find emails |
| francfranc.com | #63,544 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 8 more | Find emails |
| seslisozluk.net | #63,549 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| invoice-generator.com | #63,555 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| dusk.com | #63,563 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 7 more | Find emails |
| abclinuxu.cz | #63,567 | DoubleClick (Google Ads), Gemius, Google Analytics + 5 more | Find emails |
| pontem.network | #63,570 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| zaha-hadid.com | #63,582 | Adobe Fonts (Typekit), Azure API Management, Cloudflare + 5 more | Find emails |
| xcritical.in | #63,587 | Amazon (ACM), Amazon CloudFront, Cloudflare + 6 more | Find emails |
| superhosting.cz | #63,597 | Google Analytics, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| gridinsoft.com | #63,642 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 13 more | Find emails |
| branex.me | #63,651 | Bootstrap, Cloudflare, DMCA.com Protection + 12 more | Find emails |
| vocm.com | #63,666 | Apache, Bluesky, Bootstrap + 14 more | Find emails |
| datablitz.com.ph | #63,682 | Cloudflare edge/CDN, ConsentMo, Google Hosted Libraries + 10 more | Find emails |
| signalbit.io | #63,714 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| jbhifi.co.nz | #63,718 | Amazon Route 53, Cloudflare edge/CDN, Contentful + 11 more | Find emails |
| opoka.org.pl | #63,728 | Google Analytics, Google Fonts, Google Tag Manager + 3 more | Find emails |
| mdaemon.com | #63,734 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 8 more | Find emails |
| rinascimento.com | #63,746 | Akamai Edge DNS, Bootstrap, Cloudflare edge/CDN + 9 more | Find emails |
| engineeringnews.co.za | #63,753 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| joink.com | #63,776 | Adobe Fonts (Typekit), Bootstrap, Font Awesome + 13 more | Find emails |
| bikepacking.com | #63,787 | Adobe Fonts (Typekit), Google Analytics, Google Hosted Libraries + 12 more | Find emails |
| yit.co.il | #63,800 | ASP.NET, AngularJS, Bootstrap + 12 more | Find emails |
| emojiall.com | #63,832 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| u.today | #63,842 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 11 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 →