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 |
|---|---|---|---|
| am-one.co.jp | #125,940 | Adyen, Amazon CloudFront, Apache + 15 more | Find emails |
| zenoxserver.com | #125,948 | LiteSpeed, PHP, Sectigo + 1 more | Find emails |
| dipcas.es | #125,952 | Apache, Bootstrap, Google Analytics + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| gouv.nc |
| #125,961 |
| Drupal, Google Cloud DNS, Let's Encrypt + 4 more |
| Find emails |
| atmire.com | #125,990 | AWS Lambda, Cloudflare edge/CDN, Cookie Information + 7 more | Find emails |
| vosesoftware.com | #125,992 | Bootstrap, Google Analytics, Google Fonts + 11 more | Find emails |
| marijuanabreak.com | #126,032 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 2 more | Find emails |
| ripcurl.com | #126,034 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 6 more | Find emails |
| tabula-rasa.pw | #126,037 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 4 more | Find emails |
| hitachiaircon.com | #126,042 | Apache, Google Fonts, Google Tag Manager + 2 more | Find emails |
| little-dutch.com | #126,069 | Cloudflare edge/CDN, Cookiebot, Gorgias + 7 more | Find emails |
| quicknet.se | #126,147 | ASP.NET, Apache, Google Ads Conversion + 10 more | Find emails |
| ifs.edu.br | #126,164 | Bootstrap, Font Awesome, Google Fonts + 10 more | Find emails |
| mtgsy.co.uk | #126,230 | Apache, Cloudflare Turnstile, Let's Encrypt + 2 more | Find emails |
| clark.edu | #126,270 | Adobe Fonts (Typekit), Apache, Cloudflare + 14 more | Find emails |
| eshre.eu | #126,286 | ASP.NET, Bluesky, Bootstrap + 13 more | Find emails |
| gwlb.de | #126,290 | Bootstrap, Let's Encrypt, Mapbox + 8 more | Find emails |
| zoomshare.com | #126,316 | Amazon Route 53, Apache, Bootstrap + 12 more | Find emails |
| paniniamerica.net | #126,324 | Amazon CloudFront, Amazon S3, Bootstrap + 10 more | Find emails |
| mikweb.com.br | #126,344 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 20 more | Find emails |
| newswire.co.kr | #126,345 | Apache, Bootstrap, Google Analytics + 8 more | Find emails |
| tcscloud.de | #126,348 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| dataforseo.com | #126,356 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| velotricbike.com | #126,383 | Cloudflare edge/CDN, ConsentMo, GoAffPro + 6 more | Find emails |
| freddys.com | #126,399 | AddToAny, Amazon API Gateway, Amazon CloudFront + 21 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 →