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 |
|---|---|---|---|
| mitsu.in | #130,020 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| kinzoo.com | #130,026 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 15 more | Find emails |
| ventra.ru | #130,027 | Bitrix, DDoS-Guard, Google Tag Manager + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| mymuesli.com |
| #130,028 |
| Amazon Route 53, Cloudflare edge/CDN, ConsentMo + 11 more |
| Find emails |
| greenriver.edu | #130,044 | AOS, Azure DNS, Bootstrap + 9 more | Find emails |
| technabob.com | #130,047 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 6 more | Find emails |
| scarletblue.com.au | #130,062 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| baycare.org | #130,066 | ASP.NET, Glia, Google Fonts + 2 more | Find emails |
| keeper.io | #130,086 | Amazon CloudFront, Amazon Route 53, Atlassian Cloud + 15 more | Find emails |
| brandonsanderson.com | #130,087 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| wapp.gr | #130,096 | AOS, Google Ads Conversion, Google Analytics + 9 more | Find emails |
| lead-alliance.net | #130,151 | Google Ads Conversion, Google Analytics, Google Hosted Libraries + 11 more | Find emails |
| jcs.mil | #130,152 | AOS, ASP.NET, Bootstrap + 7 more | Find emails |
| jus.com.br | #130,177 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| ntl.ru | #130,185 | Django, Fancybox, Let's Encrypt + 8 more | Find emails |
| omnistake.com | #130,205 | Amazon Route 53, Apache, Bootstrap + 12 more | Find emails |
| iwantoneofthose.com | #130,235 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| stripersonline.com | #130,264 | Apache, Cloudflare, Font Awesome + 6 more | Find emails |
| decanter.ru | #130,265 | Bitrix, Cloudflare, Fancybox + 10 more | Find emails |
| grobonet.com | #130,276 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 9 more | Find emails |
| riseonlineworld.com | #130,279 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 13 more | Find emails |
| abedns.net | #130,331 | Apache, DigiCert, Font Awesome + 9 more | Find emails |
| hollandcooper.com | #130,342 | Adobe Fonts, Adobe Fonts (Typekit), Attentive + 20 more | Find emails |
| tldcrm.com | #130,369 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 18 more | Find emails |
| daytondiscountfurniture.com | #130,392 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 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 →