CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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.
Other captcha & bot protection
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| logikcull.com | #199,885 | Amazon Route 53, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| onewheel.com | #199,942 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| isitwp.com | #199,948 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| getsquirrel.co | #199,981 | Amazon (ACM), Amazon Route 53, Bootstrap + 10 more | Find emails |
| globalslaveryindex.org | #200,033 | Amazon (ACM), Amazon Route 53, Font Awesome + 6 more | Find emails |
| womankindmag.com | #200,036 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| filimo.school | #200,076 | Next.js, styled-components, React | Find emails |
| pressmanager.com.br | #200,084 | Amazon Route 53, Google Tag Manager, Sectigo + 3 more | Find emails |
| etoren.com | #200,097 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| krakowairport.pl | #200,104 | DigiCert, Google Tag Manager, Nginx | Find emails |
| inibuilds.com | #200,111 | Cloudflare edge/CDN, Google Fonts, Klaviyo + 5 more | Find emails |
| hobby-city.com.au | #200,114 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| chp.org.tr | #200,123 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| chickadvisor.com | #200,134 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| bedirectory.com | #200,143 | Google Analytics, Let's Encrypt, PHP | Find emails |
| buka.ru | #200,153 | Let's Encrypt, Nginx, PHP + 1 more | Find emails |
| tl.com.py | #200,199 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 2 more | Find emails |
| camperscaravans.nl | #200,205 | Google AdSense, Google Fonts, Google Publisher Tag + 7 more | Find emails |
| thonhotels.com | #200,207 | Adyen, Azure DNS, DigiCert + 1 more | Find emails |
| twc.health | #200,213 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| larroude.com | #200,218 | Attentive, Cloudflare edge/CDN, Google Tag Manager + 9 more | Find emails |
| dublinbus.ie | #200,235 | Cloudflare edge/CDN, Google Trust Services | Find emails |
| isy.io | #200,264 | Amazon (ACM), Amazon Route 53, Chart.js + 5 more | Find emails |
| misjoyas.cl | #200,306 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 6 more | Find emails |
| coneto.app | #200,336 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 6 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →