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 |
|---|---|---|---|
| helpcrunch.com | #22,452 | Cloudflare, Cloudflare edge/CDN, FirstPromoter + 10 more | Find emails |
| airliners.net | #22,457 | Amazon Advertising, Apache, Fastly + 10 more | Find emails |
| gifyu.com | #22,466 | Chevereto, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| gleap.io | #22,477 | Astro, Better Uptime, Cloudflare + 22 more | Find emails |
| admost.com | #22,481 | ASP.NET, Cloudflare Bot Management, Cloudflare edge/CDN + 13 more | Find emails |
| beechtree.pk | #22,506 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| hak.hr | #22,519 | Cloudflare, DigiCert, Google Fonts + 3 more | Find emails |
| shopcar.com.br | #22,529 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 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 + 8 more | Find emails |
| moscarossa.biz | #22,560 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| set.or.th | #22,563 | Amazon Route 53, DigiCert, Express + 4 more | Find emails |
| veohentai.com | #22,588 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| derslig.com | #22,592 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| simplepractice.com | #22,596 | Amazon Route 53, Builder.io, Google Tag Manager + 6 more | Find emails |
| ethnc.com | #22,625 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| slotor777.ua | #22,628 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| incontriamoci.xxx | #22,650 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| baldur-garten.de | #22,662 | Apache, DoubleClick (Google Ads), Google Tag Manager + 6 more | Find emails |
| rescuetime.com | #22,689 | Font Awesome, Google Analytics, Google Fonts + 13 more | Find emails |
| ifema.es | #22,713 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| sexetag.com | #22,720 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| db-ip.com | #22,755 | AddThis, Bootstrap, Cloudflare + 17 more | Find emails |
| nation.africa | #22,762 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 10 more | Find emails |
| prehraj.to | #22,800 | Cloudflare, Google Tag Manager, Nginx + 2 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →