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 |
|---|---|---|---|
| spd.co.il | #25,772 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| hostek.com | #25,832 | Bootstrap, Cloudflare edge/CDN, Google Tag Manager + 10 more | Find emails |
| roadtrippers.com | #25,848 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| hitappsgames.com | #25,868 | Google AdSense, Let's Encrypt, Nginx + 3 more | Find emails |
| exceedlms.com | #25,904 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 5 more | Find emails |
| aosulife.com | #25,987 | Bazaarvoice, Bugsnag, ClickTale (Contentsquare) + 12 more | Find emails |
| domena.pl | #26,004 | Bootstrap, Font Awesome, Google Ads Conversion + 8 more | Find emails |
| thelocal.de | #26,005 | Font Awesome, Google Cloud DNS, Google Publisher Tag + 5 more | Find emails |
| dhosting.pl | #26,008 | Bootstrap, Convert, Font Awesome + 7 more | Find emails |
| backorder.ru | #26,016 | Cloudflare, Let's Encrypt, Nginx + 2 more | Find emails |
| pectaa.edu.pk | #26,074 | Let's Encrypt, Microsoft 365 | Find emails |
| rajabandotdamai20.com | #26,120 | Bugsnag, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| alexisaeris.com | #26,148 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| olxcod.com | #26,194 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| olxday.com | #26,195 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| olxdoc.com | #26,196 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| olxonp.com | #26,197 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| toto12orange.com | #26,236 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 13 more | Find emails |
| weatherwidget.io | #26,266 | AngularJS, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| multispaces.net | #26,269 | GoDaddy Website Builder, GoDaddy | Find emails |
| krista.ru | #26,324 | Bootstrap, DDoS-Guard, Font Awesome + 3 more | Find emails |
| workwelltech.com | #26,338 | Amazon Route 53, CrazyEgg, Google Fonts + 7 more | Find emails |
| eluniverso.com | #26,358 | Google Analytics, Google Fonts, Google Publisher Tag + 4 more | Find emails |
| idefix.com | #26,384 | Amazon CloudFront, Amazon Route 53, Google Analytics + 8 more | Find emails |
| thegospelcoalition.org | #26,503 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 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 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 →