CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (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 | 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 |
|---|---|---|---|
| vive.com | #33,808 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare Turnstile + 20 more | Find emails |
| envothemes.com | #33,810 | Bootstrap, Google Analytics, Google Fonts + 8 more | Find emails |
| tv4.se | #33,820 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| uah.es | #33,850 | Bootstrap, Fancybox, Font Awesome + 7 more | Find emails |
| iiss.org | #33,852 | Azure API Management, Cloudflare edge/CDN, Google Fonts + 7 more | Find emails |
| brickset.com | #33,860 | ASP.NET, Ahrefs Analytics, Cloudflare + 14 more | Find emails |
| iium.edu.my | #33,867 | Bootstrap, Fancybox, Font Awesome + 9 more | Find emails |
| locotech.ru | #33,880 | Apache, Bitrix, Google Analytics + 5 more | Find emails |
| blazethemes.com | #33,922 | AOS, Bootstrap, Bunny Fonts + 13 more | Find emails |
| lovecrafts.com | #33,932 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| domainit.com | #33,959 | Apache, Fancybox, Google Analytics + 5 more | Find emails |
| coroflot.com | #33,972 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| hot-chilli.net | #33,978 | AMP for WP, Apache, Let's Encrypt + 5 more | Find emails |
| thebodyshop.com | #34,001 | Cloudflare edge/CDN, Intelligems, Let's Encrypt + 6 more | Find emails |
| roomstyler.com | #34,009 | Amazon Route 53, Google Analytics, Google Fonts + 3 more | Find emails |
| virtbiz.com | #34,025 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| antee.cz | #34,038 | Apache, DigiCert, Google Fonts + 7 more | Find emails |
| signup.com | #34,050 | Amazon (ACM), Amazon Route 53, Apache + 15 more | Find emails |
| chatmate.tv | #34,057 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| syndetics.com | #34,059 | Bootstrap, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| laopinion.com | #34,060 | Cloudflare, DoubleClick (Google Ads), Google Fonts + 9 more | Find emails |
| penso.com.br | #34,091 | Google Tag Manager, Gravatar, Sectigo + 3 more | Find emails |
| builtbybit.com | #34,112 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| eidos.com | #34,119 | Amazon Route 53, BugHerd, Google Tag Manager + 10 more | Find emails |
| nordicway.dk | #34,132 | Bootstrap, Google Hosted Libraries, Let's Encrypt + 4 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →