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 |
|---|---|---|---|
| contell.ru | #47,205 | Cloudflare, JivoChat, Nginx + 9 more | Find emails |
| gulfair.com | #47,223 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| maruzenjunkudo.co.jp | #47,243 | Axios, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| hematology.org | #47,256 | ASP.NET, AddThis, AddToAny + 12 more | Find emails |
| hosteur.com | #47,260 | Apache, Bootstrap, Cloudflare + 15 more | Find emails |
| goodlayers.com | #47,265 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| push4site.com | #47,289 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| tennisexpress.com | #47,312 | Cloudflare Bot Management, Cloudflare edge/CDN, ConsentMo + 12 more | Find emails |
| ambetterhealth.com | #47,352 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 11 more | Find emails |
| mescius.com | #47,368 | GSAP, Google Analytics, Google Fonts + 8 more | Find emails |
| infragistics.com | #47,371 | ASP.NET, Adobe Fonts (Typekit), Amazon Route 53 + 12 more | Find emails |
| uberant.com | #47,388 | Apache, Let's Encrypt, PHP + 1 more | Find emails |
| trackingintegral.com | #47,400 | GoDaddy Website Builder, GoDaddy | Find emails |
| lojadomecanico.com.br | #47,440 | Amazon Route 53, Azion, Bootstrap + 18 more | Find emails |
| iciciprulife.com | #47,449 | ASP.NET, Adobe Experience Cloud (Launch), Akamai Edge DNS + 12 more | Find emails |
| gcloudns.com | #47,457 | GoDaddy Website Builder, GoDaddy | Find emails |
| registrocivil.org.br | #47,470 | Adopt, Amazon Route 53, Google Analytics + 4 more | Find emails |
| redmagic.gg | #47,482 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 14 more | Find emails |
| taniaksiazka.pl | #47,486 | Ahrefs Analytics, Cloudflare, Cloudflare Turnstile + 18 more | Find emails |
| campspot.com | #47,487 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| cazoo.co.uk | #47,506 | Azure DNS, Let's Encrypt, Next.js + 7 more | Find emails |
| mohegansun.com | #47,522 | Google Tag Manager, Let's Encrypt, Microsoft 365 + 5 more | Find emails |
| joinads.me | #47,525 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| entirelydigital.com | #47,538 | Cloudflare, Font Awesome, Google Analytics + 2 more | Find emails |
| jwpepper.com | #47,574 | Adobe Fonts (Typekit), Amazon CloudFront, Bootstrap + 10 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 →