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 |
|---|---|---|---|
| dns-server.jp | #44,339 | Apache, DoubleClick (Google Ads), Fastly + 7 more | Find emails |
| bmi.io | #44,342 | Amazon Route 53, Bootstrap, Font Awesome + 9 more | Find emails |
| fold3.com | #44,360 | Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 23 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| themearile.com |
| #44,361 |
| Bootstrap, Font Awesome, Google Analytics + 12 more |
| Find emails |
| vodafone.ro | #44,364 | Imperva, Microsoft 365, Next.js + 5 more | Find emails |
| landbot.io | #44,368 | AWS Lambda, Amazon CloudFront, Atlassian Cloud + 20 more | Find emails |
| mytalkdesk.com | #44,379 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| sandhills.com | #44,408 | ASP.NET, Adobe Fonts (Typekit), Cloudflare + 7 more | Find emails |
| entorno.com | #44,409 | Adobe Fonts (Typekit), Font Awesome, Foundation + 9 more | Find emails |
| clarkcountynv.gov | #44,411 | ASP.NET, AddThis, Fastly + 9 more | Find emails |
| i-host.pl | #44,421 | Apache, Google Tag Manager, reCAPTCHA v2 | Find emails |
| algartelecom.com.br | #44,443 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| oscommerce.com | #44,449 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| allegion.com | #44,451 | Adobe Experience Cloud (Launch), Fastly, Font Awesome + 10 more | Find emails |
| world-nuclear-news.org | #44,466 | ASP.NET, Bootstrap, Cloudflare + 9 more | Find emails |
| onefc.com | #44,467 | Amazon Route 53, Bootstrap, Cloudflare edge/CDN + 6 more | Find emails |
| izotope.com | #44,473 | Adobe Fonts (Typekit), Akamai Edge DNS, Cloudflare edge/CDN + 4 more | Find emails |
| bmwblog.com | #44,475 | Amazon Route 53, Consentmanager.net, DoubleClick (Google Ads) + 10 more | Find emails |
| santaads.com | #44,502 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| msk1.ru | #44,506 | DDoS-Guard, Let's Encrypt | Find emails |
| leslibraires.fr | #44,515 | Bluesky, Bootstrap, Font Awesome + 5 more | Find emails |
| pmweb.com.br | #44,528 | Amazon Route 53, Google Fonts, Google Tag Manager + 5 more | Find emails |
| rusagrogroup.ru | #44,536 | Modernizr, Nginx, TYPO3 + 4 more | Find emails |
| inyourarea.co.uk | #44,567 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| interregeurope.eu | #44,576 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 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 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →