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.
| # | 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 |
|---|---|---|---|
| elections.org.za | #65,264 | ASP.NET, Bootstrap, Cloudflare Bot Management + 15 more | Find emails |
| lmarena.ai | #65,271 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| indotrading.com | #65,286 | ASP.NET, Bootstrap, Cloudflare + 18 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| asem.it | #65,289 | Apache, Google Fonts, Google Tag Manager + 6 more | Find emails |
| bantenprov.go.id | #65,303 | Bootstrap, Chart.js, Font Awesome + 13 more | Find emails |
| interracial.com | #65,314 | Cloudflare, Cloudflare edge/CDN, Fancybox + 5 more | Find emails |
| hoster.co.id | #65,332 | Bootstrap, Cloudflare, Font Awesome + 11 more | Find emails |
| science.org.au | #65,337 | Bluesky, Drupal, Fastly + 12 more | Find emails |
| ardvecomhub.com | #65,345 | ASP.NET, Bootstrap, Font Awesome + 11 more | Find emails |
| harryanddavid.com | #65,384 | Adobe Fonts (Typekit), CSC (Digital Brand Services), Contentstack + 9 more | Find emails |
| misterrunning.com | #65,415 | Bootstrap, ConsentMo, Criteo + 10 more | Find emails |
| filmkovasi.co | #65,427 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| kickfire.com | #65,434 | AddToAny, Adobe Fonts (Typekit), Cloudflare + 24 more | Find emails |
| signingorder.com | #65,448 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| tamanhhospital.vn | #65,458 | Bootstrap, Cloudflare, Cloudflare Bot Management + 15 more | Find emails |
| pixtastock.com | #65,467 | All in One SEO, Amazon (ACM), Amazon Route 53 + 12 more | Find emails |
| superiorhealthplan.com | #65,484 | Amazon (ACM), Amazon CloudFront, Dynatrace + 6 more | Find emails |
| mother.ly | #65,488 | Adobe Fonts (Typekit), BlogHer Ads (SHE Media), ClickTale (Contentsquare) + 13 more | Find emails |
| architectsjournal.co.uk | #65,496 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Amazon (ACM) + 15 more | Find emails |
| aidsmap.com | #65,513 | Apache, Bluesky, Cloudflare + 9 more | Find emails |
| togg.com.tr | #65,515 | DigiCert, Google Tag Manager, Insider + 6 more | Find emails |
| alfavita.gr | #65,517 | AT Internet, AppNexus, Cloudflare + 11 more | Find emails |
| refractor.io | #65,523 | Beehiiv, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| nuvei.com | #65,540 | 6sense, AWS Lambda, Cloudflare edge/CDN + 11 more | Find emails |
| riomedia.cz | #65,546 | AOS, Apache, Google Ads Conversion + 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 →