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 |
|---|---|---|---|
| solidgate.com | #28,960 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 15 more | Find emails |
| betterimpact.com | #28,978 | ASP.NET, Cloudflare Bot Management, Cloudflare edge/CDN + 21 more | Find emails |
| malegislature.gov | #28,990 | ASP.NET, Akamai Edge DNS, Bootstrap + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| istudiosg.com | #29,003 | Cloudflare edge/CDN, Fancybox, Font Awesome + 7 more | Find emails |
| booklog.jp | #29,033 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| idxbroker.com | #29,045 | Amazon (ACM), Apache, Bootstrap + 21 more | Find emails |
| serv00.net | #29,062 | Buy Me a Coffee, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| rebrandly.com | #29,087 | ASP.NET, AWS Lambda, Amazon CloudFront + 21 more | Find emails |
| fortex.ru | #29,109 | Apache, Bitrix, Google AdSense + 8 more | Find emails |
| maccosmetics.com | #29,110 | Cloudflare edge/CDN, Let's Encrypt, Riskified + 4 more | Find emails |
| itita.com | #29,119 | ASP.NET, Adobe Fonts (Typekit), Cloudflare edge/CDN + 10 more | Find emails |
| dna.fr | #29,127 | AT Internet, ConsentMo, Didomi + 2 more | Find emails |
| coldwellbankerhomes.com | #29,142 | Amazon Route 53, Amplitude, Axios + 16 more | Find emails |
| atitesting.com | #29,183 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Cloudflare + 22 more | Find emails |
| bambuser.io | #29,224 | AWS Lambda, Amazon (ACM), Amazon CloudFront + 9 more | Find emails |
| benetton.com | #29,246 | Cloudflare edge/CDN, Cookiebot, Google Tag Manager + 6 more | Find emails |
| abajournal.com | #29,288 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| pensoft.net | #29,310 | AOS, All in One SEO, Bluesky + 13 more | Find emails |
| tryhackx.org | #29,313 | Apache, Let's Encrypt, jsDelivr + 1 more | Find emails |
| agddns.net | #29,330 | ASP.NET, Google Analytics, Google Fonts + 6 more | Find emails |
| adultempire.com | #29,335 | Font Awesome, Let's Encrypt, Ruby on Rails + 1 more | Find emails |
| realself.com | #29,366 | Amazon Route 53, Fastly, Google Analytics + 3 more | Find emails |
| beepworld.de | #29,376 | Apache, DigiCert, Google Ads Conversion + 4 more | Find emails |
| umms.org | #29,404 | Amazon CloudFront, Azure API Management, Cloudflare + 11 more | Find emails |
| metered.ca | #29,407 | Axios, Azure Front Door, DigiCert + 14 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 →