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 |
|---|---|---|---|
| pop-os.org | #22,082 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| kra.go.ke | #22,095 | Bootstrap, DigiCert, Fancybox + 6 more | Find emails |
| torrentleech.org | #22,109 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| salesmanago.pl | #22,114 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| psypost.org | #22,129 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| swisssign.net | #22,154 | Akamai Edge DNS, Microsoft 365, reCAPTCHA v2 | Find emails |
| ktu.edu.in | #22,297 | Font Awesome, Google Fonts, Nginx + 1 more | Find emails |
| superb.net | #22,341 | Bootstrap, Font Awesome, Google Fonts + 4 more | Find emails |
| santanderbank.com | #22,389 | Adobe Audience Manager, Adobe Target, Akamai Bot Manager + 19 more | Find emails |
| beechtree.pk | #22,506 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| dexter.com.ar | #22,537 | Bootstrap, Cloudflare edge/CDN, Font Awesome + 16 more | Find emails |
| funky-fruits-slot.com | #22,545 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| ethnc.com | #22,625 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| rescuetime.com | #22,689 | Font Awesome, Google Analytics, Google Fonts + 7 more | Find emails |
| sexetag.com | #22,720 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| nation.africa | #22,762 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| prehraj.to | #22,800 | Cloudflare, Google Tag Manager, Nginx + 2 more | Find emails |
| rossko.ru | #22,814 | Google Tag Manager, PHP, WhatsApp Business (click-to-chat) + 1 more | Find emails |
| aldi.us | #22,897 | Amazon (ACM), Amazon CloudFront, CSC (Digital Brand Services) + 7 more | Find emails |
| cryptocompare.com | #22,901 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| web4u.cz | #22,946 | Bootstrap, Google Analytics, Google Tag Manager + 7 more | Find emails |
| edenrobe.com | #22,956 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| mykomon.com | #22,968 | Chart.js, Google Analytics, Google Fonts + 9 more | Find emails |
| jerseymikes.com | #22,996 | Amazon (ACM), Amazon Route 53, Nuxt.js + 2 more | Find emails |
| redtape.com | #23,013 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 3 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 →