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 |
|---|---|---|---|
| donedeal.ie | #7,554 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| nanit.com | #7,555 | AB Tasty, Amazon Route 53, Attentive + 11 more | Find emails |
| sojern.com | #7,574 | Cloudflare edge/CDN, Font Awesome, Google Cloud DNS + 7 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| northwesternmutual.com |
| #7,592 |
| Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Amazon CloudFront + 5 more |
| Find emails |
| delaware.gov | #7,594 | Bootstrap, Font Awesome, Google Fonts + 9 more | Find emails |
| confluent.cloud | #7,661 | Amazon (ACM), Amazon Route 53, Nginx + 1 more | Find emails |
| complex.com | #7,676 | Amazon Route 53, Amplitude, Cloudflare Bot Management + 10 more | Find emails |
| motorola.com | #7,678 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 3 more | Find emails |
| ipsosinteractive.com | #7,891 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 9 more | Find emails |
| adam4adam.com | #7,923 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 3 more | Find emails |
| pearltrees.com | #8,020 | Bootstrap, DigiCert, Google Fonts + 7 more | Find emails |
| vocabulary.com | #8,168 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| clicktripz.com | #8,243 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| dedeman.ro | #8,449 | DigiCert, Fastly, Google Tag Manager + 2 more | Find emails |
| nhentai.xxx | #8,518 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| tumbex.com | #8,559 | Font Awesome, Google Analytics, Google Fonts + 6 more | Find emails |
| olist.com | #8,578 | Amazon CloudFront, Amazon Route 53, Cloudflare Bot Management + 6 more | Find emails |
| poynter.org | #8,587 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| kaliscan.io | #8,658 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| rawstory.com | #8,686 | Cloudflare, Fastly, Google Fonts + 4 more | Find emails |
| trassir.com | #8,701 | Google Tag Manager, Microsoft 365, Nginx + 3 more | Find emails |
| prehrajto.cz | #8,702 | Cloudflare, Google Tag Manager, Nginx + 2 more | Find emails |
| daisonet.com | #8,716 | Amazon Route 53, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| parfois.com | #8,721 | Braze, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| newsbomb.gr | #8,726 | DigiCert, Joomla, Microsoft 365 + 1 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 →