CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| savings.com | #101,859 | Amazon Route 53, DigiCert, DoubleClick (Google Ads) + 6 more | Find emails |
| fiba.com | #101,866 | Azure API Management, Azure Front Door, DigiCert + 5 more | Find emails |
| williamsf1.com | #101,887 | Adobe Experience Cloud (Launch), DoubleClick (Google Ads), Google Publisher Tag + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| cooley.com | #101,909 | Azure DNS, Azure Front Door, Coveo + 7 more | Find emails |
| offensive-security.com | #101,912 | Astro, Cookiebot, Google Tag Manager + 5 more | Find emails |
| onlinehosting.com.tr | #101,929 | Bootstrap, Cloudflare, DoubleClick (Google Ads) + 17 more | Find emails |
| marsello.com | #101,930 | Adobe Fonts (Typekit), Ahrefs Analytics, Amazon Route 53 + 18 more | Find emails |
| polene-paris.com | #101,931 | Cloudflare edge/CDN, Klaviyo, Let's Encrypt + 3 more | Find emails |
| newmont.com | #101,940 | ASP.NET, Amazon CloudFront, Azure DNS + 16 more | Find emails |
| uca.edu.sv | #101,971 | Amazon Route 53, Apache, Bootstrap + 12 more | Find emails |
| davines.com | #101,980 | Cloudflare edge/CDN, Google Fonts, Let's Encrypt + 5 more | Find emails |
| slack-status.com | #101,991 | Google Cloud, Google Cloud DNS, Google Tag Manager + 4 more | Find emails |
| mamasandpapas.com | #101,992 | Bootstrap, CSC (Digital Brand Services), Cloudflare edge/CDN + 11 more | Find emails |
| omabrowser.org | #101,997 | Blogger, Bootstrap, Cloudflare + 13 more | Find emails |
| cooperhealth.org | #102,008 | ASP.NET, BugHerd, ConsentMo + 19 more | Find emails |
| megajogos.com.br | #102,039 | Google AdSense, Google Ads Conversion, Google Analytics + 13 more | Find emails |
| adtrace.ai | #102,101 | AWS Lambda, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| buykud.com | #102,103 | Cloudflare edge/CDN, Google Trust Services, Meta Pixel + 8 more | Find emails |
| brooklinen.com | #102,107 | Attentive, Cloudflare edge/CDN, Dynamic Yield + 12 more | Find emails |
| grillsportverein.de | #102,116 | Blogger, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| hcgdietinfo.com | #102,125 | Font Awesome, Google Fonts, Google Site Kit + 9 more | Find emails |
| quantconnect.com | #102,127 | Algolia, Amazon Route 53, Better Uptime + 20 more | Find emails |
| voicethread.com | #102,169 | Amazon (ACM), Amazon Route 53, Apache + 4 more | Find emails |
| bruzz.be | #102,194 | Amazon (ACM), Amazon CloudFront, Bluesky + 10 more | Find emails |
| mfrural.com.br | #102,196 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 12 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →