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 |
|---|---|---|---|
| tlscontact.com | #25,110 | Adobe Fonts (Typekit), Font Awesome, Google Fonts + 15 more | Find emails |
| eduson.tv | #25,114 | Amazon Route 53, Google Analytics, Let's Encrypt + 4 more | Find emails |
| archive.fo | #25,126 | Let's Encrypt, Nginx, reCAPTCHA v2 | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| archive.today |
| #25,129 |
| Let's Encrypt, Nginx, reCAPTCHA v2 |
| Find emails |
| clausweb.ro | #25,146 | Bootstrap, Font Awesome, Google Analytics + 13 more | Find emails |
| gabungwa.net | #25,149 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| files.com | #25,153 | Let's Encrypt, Next.js, Turbopack + 4 more | Find emails |
| omaha.com | #25,158 | 33Across, Advertising.com, Amazon Advertising + 45 more | Find emails |
| sanfe.in | #25,187 | Attentive, Cloudflare edge/CDN, GoAffPro + 17 more | Find emails |
| anydns.info | #25,195 | Apache, Bootstrap, Fancybox + 3 more | Find emails |
| wmata.com | #25,227 | ASP.NET, Azure Front Door, Cloudflare + 9 more | Find emails |
| vitacost.com | #25,229 | Attentive, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| shortpixel.com | #25,230 | Bootstrap, Bunny CDN, BunnyCDN + 18 more | Find emails |
| armorgames.com | #25,239 | Amazon CloudFront, Bootstrap, Cloudflare + 5 more | Find emails |
| kameone.cl | #25,255 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| perthnow.com.au | #25,273 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| trendhunter.com | #25,274 | Amazon Route 53, Apache, Google Analytics + 9 more | Find emails |
| wearesocial.com | #25,275 | 6sense, Amazon Route 53, Civic Cookie Control + 13 more | Find emails |
| topps.com | #25,321 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| gubagoo.io | #25,326 | Amazon Route 53, Let's Encrypt, PHP + 4 more | Find emails |
| vigilearnlms.com | #25,337 | Amplitude, Azure DNS, Bootstrap + 8 more | Find emails |
| viz.com | #25,360 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| siteplug.com | #25,388 | AOS, Amazon Route 53, Bootstrap + 17 more | Find emails |
| indriya.com | #25,408 | Adobe Experience Cloud (Launch), Fastly, Microsoft 365 + 4 more | Find emails |
| govexec.com | #25,419 | Azure DNS, Azure Front Door, Bootstrap + 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →