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 |
|---|---|---|---|
| omni-dex.io | #11,318 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| mova-tech.com | #11,324 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 8 more | Find emails |
| pubnation.com | #11,404 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| olxlay.com | #11,440 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| olxsun.com | #11,442 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| psychiatry.org | #11,460 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| yospace.com | #11,481 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 9 more | Find emails |
| computerweekly.com | #11,508 | Cloudflare edge/CDN, Google AdSense, Google Publisher Tag + 3 more | Find emails |
| myfonts.com | #11,525 | Adobe Experience Cloud (Launch), Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| texastribune.org | #11,528 | Cloudflare, Google Analytics, Google Publisher Tag + 8 more | Find emails |
| olark.com | #11,535 | Cloudflare edge/CDN, ConsentMo, Google Cloud DNS + 6 more | Find emails |
| vietjetair.com | #11,589 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| adventori.com | #11,599 | AOS, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| thejournal.ie | #11,631 | Amazon (ACM), Bugsnag, Cloudflare + 15 more | Find emails |
| nanosystems.it | #11,636 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| elte.hu | #11,643 | ConsentMo, Drupal, Microsoft 365 + 1 more | Find emails |
| mollie.com | #11,727 | Framer, Google Cloud DNS, Google Trust Services | Find emails |
| siteground.eu | #11,735 | Cookiebot, Google Trust Services, Nginx + 2 more | Find emails |
| adultfriendfinder.com | #11,748 | Google Fonts, Google Tag Manager, jQuery + 2 more | Find emails |
| captioncall.com | #11,794 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 5 more | Find emails |
| hostifi.com | #11,831 | Beehiiv, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| uma.es | #11,847 | Bootstrap, Font Awesome, Google Fonts + 4 more | Find emails |
| botslab.com | #11,849 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 2 more | Find emails |
| cloudpayments.ru | #11,875 | AOS, reCAPTCHA v2 | Find emails |
| consentmo.com | #11,893 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 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 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 →