CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| atype.jp | #205,653 | Google Analytics, Let's Encrypt, PHP + 1 more | Find emails |
| vonq.com | #205,720 | Bootstrap, CookieYes, Font Awesome + 8 more | Find emails |
| undefeated.com | #205,747 | Cloudflare, Cloudflare edge/CDN, Global-e + 10 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| yeoreo.com |
| #205,755 |
| Cloudflare edge/CDN, Judge.me, Let's Encrypt + 4 more |
| Find emails |
| webnode.se | #205,761 | Amazon Route 53, Convert, Envoy + 5 more | Find emails |
| maniko-nails.de | #205,804 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 7 more | Find emails |
| branchbasics.com | #205,809 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| streamscape.com.au | #205,868 | Bootstrap, Font Awesome, Google Analytics + 5 more | Find emails |
| jaipur.watch | #205,893 | Cloudflare edge/CDN, Google Workspace, Let's Encrypt + 5 more | Find emails |
| edelflex.com | #205,902 | Bootstrap, Font Awesome, Google Analytics + 10 more | Find emails |
| canon-asia.com | #205,918 | Amazon (ACM), Amazon CloudFront, Google Analytics + 3 more | Find emails |
| yocket.com | #205,920 | Amazon (ACM), Amazon Route 53, Google Analytics + 4 more | Find emails |
| coinafrique.com | #205,931 | Amazon (ACM), Amazon Route 53, Google Fonts + 5 more | Find emails |
| dac.com.uy | #205,944 | AOS, Bootstrap, Font Awesome + 8 more | Find emails |
| alpkit.com | #205,965 | Cloudflare edge/CDN, ConsentMo, Google Fonts + 11 more | Find emails |
| saportareport.com | #205,976 | Google Analytics, Google Tag Manager, Google Trust Services + 7 more | Find emails |
| weny.com | #206,027 | Google Fonts, Google Tag Manager, Google Trust Services + 3 more | Find emails |
| zapatos.es | #206,043 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| cincinnatimagazine.com | #206,051 | Google AdSense, Google Analytics, Google Fonts + 8 more | Find emails |
| cngcoins.com | #206,111 | ASP.NET, Cloudflare, Google Analytics + 2 more | Find emails |
| galveston.com | #206,113 | Amazon Route 53, Font Awesome, Google Fonts + 6 more | Find emails |
| servers24.cloud | #206,114 | Font Awesome, Let's Encrypt, WordPress + 1 more | Find emails |
| delsud.com.ar | #206,139 | Google Analytics, Google Fonts, Google Tag Manager + 5 more | Find emails |
| obagi.com | #206,144 | AOS, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| hisgifts.us | #206,172 | Cloudflare, Cloudflare edge/CDN, Hotjar + 8 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →