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 |
|---|---|---|---|
| chuffed.org | #60,372 | Algolia, Bugsnag, Cloudflare + 16 more | Find emails |
| gorgias.io | #60,376 | AWS Lambda, Cloudflare edge/CDN, GSAP + 11 more | Find emails |
| geosaitebi.tv | #60,382 | Bunny CDN, BunnyCDN, Cloudflare + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| rustreborn.gg |
| #60,393 |
| ASP.NET, Amazon CloudFront, Atlassian Cloud + 12 more |
| Find emails |
| torfs.be | #60,403 | BrightEdge, Cloudflare, Cloudflare Bot Management + 12 more | Find emails |
| setopati.com | #60,407 | Amazon Route 53, Bootstrap, Font Awesome + 18 more | Find emails |
| providerportal.com | #60,408 | ASP.NET, Akamai Edge DNS, Sectigo + 3 more | Find emails |
| fanfills.com | #60,438 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| fanaticscollect.com | #60,441 | Amazon CloudFront, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| hostslim.nl | #60,448 | Apache, Bootstrap, Fastly + 14 more | Find emails |
| lsn.com | #60,452 | Amazon Advertising, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| elnashra.com | #60,456 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| cascadedesigns.com | #60,491 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| uludagsozluk.com | #60,532 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| kumbe.it | #60,540 | Bootstrap, Let's Encrypt, LinkedIn Insight Tag + 8 more | Find emails |
| nextcity.org | #60,554 | Adobe Fonts (Typekit), Bluesky, Bootstrap + 14 more | Find emails |
| zyn.com | #60,564 | ASP.NET, Adobe Fonts (Typekit), Akamai Bot Manager + 17 more | Find emails |
| thelocal.it | #60,578 | Adnami, Bluesky, DoubleClick (Google Ads) + 11 more | Find emails |
| jvzoo.com | #60,594 | AOS, Apache, Bootstrap + 17 more | Find emails |
| melhorenvio.com.br | #60,605 | Amazon (ACM), Amazon Route 53, CookieFirst + 22 more | Find emails |
| worldstar.com | #60,606 | Apache, Bootstrap, Cloudflare Bot Management + 23 more | Find emails |
| hosting4less.com | #60,621 | All in One SEO, Apache, DigiCert + 6 more | Find emails |
| dehner.de | #60,627 | Google Tag Manager, Let's Encrypt, Next.js + 6 more | Find emails |
| kiosko.net | #60,634 | DoubleClick (Google Ads), Google Analytics, Google Hosted Libraries + 6 more | Find emails |
| jackery.com | #60,637 | Cloudflare edge/CDN, Cookiebot, Google Tag Manager + 6 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 →