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 |
|---|---|---|---|
| willemsefrance.fr | #75,784 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 3 more | Find emails |
| h-flash.com | #75,801 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| bancocajasocial.com | #75,802 | Adobe Experience Cloud (Launch), CDN Fonts, DigiCert + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| jmmb.com | #75,813 | AddThis, AddToAny, Bootstrap + 11 more | Find emails |
| filmai.in | #75,815 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| tutete.com | #75,829 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 5 more | Find emails |
| fapnut.net | #75,839 | AdScore, DDoS-Guard, ExoClick + 11 more | Find emails |
| retailgazette.co.uk | #75,852 | Bootstrap, Cloudflare, Google Fonts + 9 more | Find emails |
| lenntech.com | #75,853 | AddThis, Apache, Bootstrap + 9 more | Find emails |
| epm.com.co | #75,870 | Adobe Advertising Cloud, Adobe Analytics, Adobe Audience Manager + 16 more | Find emails |
| mimebd.com | #75,875 | Bootstrap, Font Awesome, Google Analytics + 10 more | Find emails |
| sompo-direct.co.jp | #75,890 | Akamai Edge DNS, Apache, DigiCert + 6 more | Find emails |
| honeywellhome.com | #75,905 | BrightEdge, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| djournal.com | #75,966 | Amazon Route 53, Blockthrough, DoubleClick (Google Ads) + 13 more | Find emails |
| offerbox.jp | #75,987 | All in One SEO, Amazon (ACM), Amazon Route 53 + 13 more | Find emails |
| mobilecity.vn | #76,003 | Cloudflare, Font Awesome, Google Analytics + 10 more | Find emails |
| visualtec.host | #76,027 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| synonymo.fr | #76,037 | Apache, Consent Framework, DoubleClick (Google Ads) + 7 more | Find emails |
| credit-agricole.ua | #76,041 | Akamai Edge DNS, Google Tag Manager, Laravel + 6 more | Find emails |
| cmnw.jp | #76,053 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| speedo.com | #76,082 | Attentive, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| tcgrepublic.com | #76,084 | DigiCert, Django, Font Awesome + 7 more | Find emails |
| bug.hr | #76,092 | ASP.NET, Azure API Management, Azure DNS + 10 more | Find emails |
| ringotel.co | #76,097 | AWS Lambda, Amazon CloudFront, Cloudflare edge/CDN + 6 more | Find emails |
| artexhibition.jp | #76,100 | Adingo, DoubleClick (Google Ads), Fastly + 13 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 →