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 |
|---|---|---|---|
| freemail.hu | #17,296 | Google Tag Manager, Next.js, Nginx + 3 more | Find emails |
| business.gov.au | #17,299 | ASP.NET, Coveo, DigiCert + 7 more | Find emails |
| is.co.za | #17,303 | Akamai mPulse, DigiCert, Google Tag Manager + 3 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| wish.com |
| #17,346 |
| Amazon Route 53, Braintree, Cloudflare Bot Management + 5 more |
| Find emails |
| instaread.co | #17,369 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| animate-onlineshop.jp | #17,386 | Amazon Route 53, Font Awesome, Google Analytics + 5 more | Find emails |
| bloxd.io | #17,417 | Cloudflare, Cloudflare edge/CDN, Google Trust Services | Find emails |
| pacvue.com | #17,426 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| tissotwatches.com | #17,456 | AOS, Azure DNS, Cloudflare edge/CDN + 5 more | Find emails |
| monkeytype.com | #17,460 | Cloudflare, Cloudflare edge/CDN, Fastly + 3 more | Find emails |
| tucson.com | #17,490 | Amazon Advertising, Font Awesome, Google AdSense + 17 more | Find emails |
| tpserv.ru | #17,501 | Let's Encrypt, Nginx, WordPress + 2 more | Find emails |
| evolution.com | #17,520 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| sdsys.ru | #17,530 | Font Awesome, Google Fonts, Let's Encrypt + 6 more | Find emails |
| namespro.ca | #17,531 | Google Analytics, Google Fonts, Google Tag Manager + 1 more | Find emails |
| eiu.com | #17,538 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| justjared.com | #17,596 | Cloudflare, Cloudflare edge/CDN, Google Publisher Tag + 4 more | Find emails |
| preyproject.com | #17,715 | Cloudflare, Cloudflare edge/CDN, Cookiebot + 6 more | Find emails |
| housecallpro.com | #17,729 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| hites.com | #17,739 | Cloudflare edge/CDN, DigiCert, Google Cloud DNS + 4 more | Find emails |
| adestra.com | #17,805 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| duplichecker.com | #17,812 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| advanceautoparts.com | #17,875 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 7 more | Find emails |
| telecom.kz | #17,882 | Laravel | Find emails |
| roberthalf.com | #17,920 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 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 →