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 |
|---|---|---|---|
| superbottoms.com | #82,451 | Cloudflare, Cloudflare edge/CDN, GoAffPro + 12 more | Find emails |
| borisfx.com | #82,476 | Adobe Fonts, Adobe Fonts (Typekit), Cloudinary + 6 more | Find emails |
| karakubuy.com | #82,504 | Cloudflare, Cloudflare edge/CDN, GSAP + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| ignboards.com | #82,508 | Amazon Route 53, Chartbeat, DoubleClick (Google Ads) + 7 more | Find emails |
| yggdrasilgaming.com | #82,530 | Drupal, Google Analytics, Google Cloud DNS + 10 more | Find emails |
| freelists.org | #82,532 | Better Uptime, Bootstrap, Cloudflare + 19 more | Find emails |
| getlike.io | #82,555 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| adforum.com | #82,562 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 11 more | Find emails |
| holotaco.com | #82,565 | Cloudflare edge/CDN, Google Fonts, Klaviyo + 6 more | Find emails |
| isseymiyake.com | #82,590 | Amazon Route 53, Cloudflare edge/CDN, ConsentMo + 13 more | Find emails |
| ltube.us | #82,591 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| superlivechat.tv | #82,594 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| letao.com.tw | #82,601 | Apache, Axios, Cloudflare Turnstile + 12 more | Find emails |
| britishessentials.com | #82,608 | Bootstrap, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| succeed.net | #82,613 | Apache, Font Awesome, Foundation + 6 more | Find emails |
| myoresearch.com | #82,620 | Apache, Google Analytics, Google Tag Manager + 6 more | Find emails |
| fashionspark.com | #82,627 | Azure DNS, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| mariab.pk | #82,631 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| polpick.io | #82,643 | Bootstrap, Chart.js, Cloudflare + 8 more | Find emails |
| gub.uy | #82,647 | ConsentMo, Drupal, Let's Encrypt + 1 more | Find emails |
| inqaku.com | #82,656 | Adobe Fonts, Adobe Fonts (Typekit), Bootstrap + 14 more | Find emails |
| county.org | #82,693 | ASP.NET, Azure API Management, Cloudflare Bot Management + 8 more | Find emails |
| mowplayer.com | #82,699 | Bootstrap, Google Tag Manager, Let's Encrypt + 3 more | Find emails |
| healthhub.sg | #82,706 | ASP.NET, Amazon CloudFront, Amazon Route 53 + 17 more | Find emails |
| ift.org.mx | #82,728 | AppDynamics, Bootstrap, DigiCert + 16 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 →