CAPTCHA & Bot Protection
50,387 of the 1,000,000 top sites in our Tranco top-1M census run Cloudflare Turnstile (5%). Cloudflare's non-interactive CAPTCHA replacement, bundled free with its CDN/WAF. Detection is homepage-level HTML/header fingerprinting, so a site can run Cloudflare Turnstile on other pages without it showing here.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | x.com | #54 (Tranco) | Find emails |
| 2 | discord.com | #163 (Tranco) | Find emails |
| 3 | flickr.com | #172 (Tranco) | Find emails |
| 4 | soundcloud.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| localwiki.org | #72,994 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 7 more | Find emails |
| jospt.org | #73,026 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| travala.com | #73,042 | AppNexus (Xandr), Cloudflare, Cloudflare Bot Management + 7 more | Find emails |
| #176 (Tranco) |
| Find emails |
| 5 | medium.com | #178 (Tranco) | Find emails |
| appisfree.com | #73,047 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| iatatravelcentre.com | #73,050 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt | Find emails |
| jmouders.nl | #73,072 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| devki.net | #73,078 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| roleplayer.me | #73,097 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 7 more | Find emails |
| nelson.nl | #73,131 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| ivelt.com | #73,158 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| pornhdmate.com | #73,174 | Amplitude, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| want.nl | #73,175 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| fruugo.co.uk | #73,220 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services | Find emails |
| hr.com | #73,224 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| manga-oni.com | #73,238 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| etuc.org | #73,242 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| zoommer.ge | #73,258 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| sportisimo.sk | #73,274 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| vinschool.edu.vn | #73,279 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| crnobelo.com | #73,282 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| bsbfashion.com | #73,296 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| bitkub.com | #73,297 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| mbworld.org | #73,321 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 17 more | Find emails |
| peek-cloppenburg.nl | #73,354 | CSC (Digital Brand Services), Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| steren.com.mx | #73,373 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 8 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 →