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 |
|---|---|---|---|
| ticksy.com | #15,898 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| buffalonews.com | #15,910 | 33Across, Advertising.com, Amazon Advertising + 40 more | Find emails |
| trueanthem.com | #15,912 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| vagaro.com | #15,915 | ASP.NET, Adobe Fonts (Typekit), Azure API Management + 6 more | Find emails |
| lh.pl | #15,946 | Apache, Bootstrap, Google Fonts + 6 more | Find emails |
| airliquide.com | #15,947 | Akamai Bot Manager, ConsentMo, Didomi + 9 more | Find emails |
| vinmec.com | #15,952 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| weber.com | #15,958 | Akamai Edge DNS, Akamai edge/CDN, Akamai mPulse + 8 more | Find emails |
| zenbox.pl | #15,980 | Font Awesome, Google Tag Manager, Gravatar + 9 more | Find emails |
| walkscore.com | #15,999 | Amazon (ACM), Amazon Route 53, Apache + 7 more | Find emails |
| cloudamqp.com | #16,018 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| mcpedl.com | #16,035 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| valvesoftware.com | #16,073 | Akamai Edge DNS, Let's Encrypt, Nginx + 2 more | Find emails |
| yes24.com | #16,080 | ASP.NET, DigiCert, Google Tag Manager + 2 more | Find emails |
| jacobin.com | #16,109 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| magcloud.com | #16,150 | ASP.NET, Adobe Fonts (Typekit), Amazon (ACM) + 15 more | Find emails |
| betterstack.com | #16,158 | AOS, Better Uptime, ChatGPT Ads Pixel + 17 more | Find emails |
| pisos.com | #16,181 | ASP.NET, Adobe Experience Cloud (Launch), Bootstrap + 19 more | Find emails |
| umbler.com | #16,185 | ASP.NET, Bootstrap, Cloudflare Bot Management + 19 more | Find emails |
| docdroid.net | #16,189 | Laravel, Let's Encrypt, reCAPTCHA v2 | Find emails |
| mattel163.com | #16,210 | Amazon CloudFront, Amazon Route 53, DigiCert + 8 more | Find emails |
| bad.news | #16,240 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| allmylinks.com | #16,265 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 11 more | Find emails |
| intimissimi.com | #16,273 | AB Tasty, Cloudflare edge/CDN, DigiCert + 6 more | Find emails |
| carecredit.com | #16,278 | Adobe Fonts (Typekit), Akamai Bot Manager, Akamai Edge DNS + 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →