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 |
|---|---|---|---|
| nzdating.com | #22,818 | Bootstrap, DigiCert, Google AdSense + 5 more | Find emails |
| hanimesubth.com | #22,878 | Blogger, Bootstrap, Cloudflare + 13 more | Find emails |
| ukit.com | #22,885 | Bootstrap, CleanTalk, DDoS-Guard + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| tamildailycalendar.com |
| #22,888 |
| Apache, Bootstrap, Google AdSense + 7 more |
| Find emails |
| aldi.us | #22,897 | Amazon (ACM), Amazon CloudFront, CSC (Digital Brand Services) + 7 more | Find emails |
| cryptocompare.com | #22,901 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| pulsedmedia.com | #22,939 | Apache, DigiCert, Font Awesome + 8 more | Find emails |
| web4u.cz | #22,946 | Bootstrap, Google Analytics, Google Tag Manager + 7 more | Find emails |
| edenrobe.com | #22,956 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| mykomon.com | #22,968 | All in One SEO, Amazon Route 53, Chart.js + 12 more | Find emails |
| carrosnaserra.com.br | #22,981 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 12 more | Find emails |
| jerseymikes.com | #22,996 | Amazon (ACM), Amazon Route 53, Nuxt.js + 2 more | Find emails |
| redtape.com | #23,013 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 4 more | Find emails |
| cpuid.com | #23,018 | Apache, Google AdSense, Google Analytics + 5 more | Find emails |
| odexglobal.com | #23,023 | Amazon Route 53, Apache, Bootstrap + 13 more | Find emails |
| sicofi.com.mx | #23,025 | Bootstrap, Cloudflare Turnstile, Fancybox + 6 more | Find emails |
| bldramaturkey.co | #23,068 | Astro, Bootstrap, Cloudflare + 14 more | Find emails |
| pahindot.me | #23,074 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| ice.co.il | #23,077 | ASP.NET, Cloudflare, DigiCert + 11 more | Find emails |
| littleboxindia.com | #23,092 | Ahrefs Analytics, Cloudflare edge/CDN, ConsentMo + 17 more | Find emails |
| ebaumsworld.com | #23,093 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| loterianacional.gob.mx | #23,100 | ASP.NET, Bootstrap, DigiCert + 8 more | Find emails |
| bd.com | #23,106 | Adobe Experience Manager Edge Delivery (Helix RUM), Akamai edge/CDN, Akamai mPulse + 19 more | Find emails |
| thelocal.se | #23,114 | Adnami, Bluesky, DoubleClick (Google Ads) + 10 more | Find emails |
| blocklist.de | #23,127 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 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 →