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 |
|---|---|---|---|
| wabcradio.com | #132,525 | Amazon (ACM), Amazon Route 53, Bootstrap + 9 more | Find emails |
| rhymes.com | #132,528 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| nmgk.ru | #132,531 | Modernizr, Nginx, TYPO3 + 4 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| arzhost.com |
| #132,545 |
| Bootstrap, Font Awesome, Google Analytics + 11 more |
| Find emails |
| idi.org.il | #132,546 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| beercartel.com.au | #132,561 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 11 more | Find emails |
| midwestgunworks.com | #132,563 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| egardia.com | #132,567 | Apache, Bootstrap, Google Analytics + 6 more | Find emails |
| 3dtotal.com | #132,594 | Cloudflare, Cloudflare edge/CDN, Hotjar + 6 more | Find emails |
| thrivin.com | #132,607 | Cloudflare edge/CDN, Constructor.io, Google Workspace + 8 more | Find emails |
| dyslexiaida.org | #132,642 | ASP.NET, Azure API Management, Cloudflare + 18 more | Find emails |
| dfi.dk | #132,697 | Cookiebot, Drupal, Google Tag Manager + 6 more | Find emails |
| pointsoflight.org | #132,698 | Cloudflare, Cloudflare edge/CDN, Fastly + 14 more | Find emails |
| artnet.com.pl | #132,700 | Bootstrap, Google Analytics, Google Tag Manager + 4 more | Find emails |
| netlly.ru | #132,717 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| iclr.cc | #132,725 | Apache, Bootstrap, Braintree + 13 more | Find emails |
| wolford.com | #132,734 | Cloudflare edge/CDN, DigiCert, Google Fonts + 7 more | Find emails |
| cbs19news.com | #132,754 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 6 more | Find emails |
| fitfoodiefinds.com | #132,784 | Ahrefs Analytics, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| hollowaysofludlow.com | #132,793 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| abc57.com | #132,803 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| extrabux.com | #132,804 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| unisc.edu.au | #132,809 | ASP.NET, Azure API Management, Cloudflare + 9 more | Find emails |
| pharmagest.com | #132,826 | AOS, Fancybox, Google Fonts + 5 more | Find emails |
| goldcopd.org | #132,833 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 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 →