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 |
|---|---|---|---|
| juegosonce.es | #9,447 | Google Analytics, Google Hosted Libraries, Google Tag Manager + 5 more | Find emails |
| zone-turf.fr | #9,458 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| readawrite.com | #9,461 | Bootstrap, Google Analytics, Google Fonts + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| xossipy.com | #9,465 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| rosszlanyok.hu | #9,467 | Google Analytics, Google Fonts, Google Hosted Libraries + 6 more | Find emails |
| pastelink.net | #9,475 | Cloudflare Turnstile, Google Fonts, Google Tag Manager + 7 more | Find emails |
| zellbury.com | #9,502 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 3 more | Find emails |
| saya.pk | #9,525 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 12 more | Find emails |
| marketiq.com | #9,552 | Amazon Route 53, CleanTalk, Google Fonts + 4 more | Find emails |
| nowtv.com.tr | #9,578 | DigiCert, Google AdSense, Google Tag Manager + 2 more | Find emails |
| playsport.cc | #9,582 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| pex.jp | #9,665 | Adingo, Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| elephantbet.co.mz | #9,666 | Amazon CloudFront, Elementor, Font Awesome + 5 more | Find emails |
| workman.jp | #9,688 | Amazon CloudFront, Amazon Route 53, Font Awesome + 12 more | Find emails |
| buzzarab.com | #9,691 | AOS, Cloudflare, Cloudflare Turnstile + 19 more | Find emails |
| suramericana.com | #9,703 | AOS, Google Analytics, Google Fonts + 8 more | Find emails |
| jecontacte.com | #9,709 | Amazon (ACM), Amazon Route 53, Apache + 4 more | Find emails |
| kgirls.net | #9,717 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| jadwalnonton.com | #9,757 | Cloudflare, Google AdSense, Google Analytics + 7 more | Find emails |
| ich-tanke.de | #9,782 | Google Funding Choices, Google Publisher Tag, Let's Encrypt + 4 more | Find emails |
| zabbix.com | #9,820 | AOS, Adyen, Brightcove + 25 more | Find emails |
| sat.co.id | #9,822 | Sectigo, reCAPTCHA Enterprise, reCAPTCHA v2 | Find emails |
| officestation.jp | #9,834 | All in One SEO, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| imssms.org | #9,875 | Apache, Bootstrap, Namecheap + 3 more | Find emails |
| gamerant.com | #9,891 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 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 →