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 |
|---|---|---|---|
| inwayhosting.com | #111,132 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| oxefit.com | #111,170 | Amazon (ACM), Amazon CloudFront, Amazon S3 + 5 more | Find emails |
| banzai.org | #111,187 | Amazon (ACM), Amazon Route 53, Google Tag Manager + 3 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| addall.com | #111,198 | Google Analytics, Google Fonts, Google Tag Manager + 6 more | Find emails |
| ledsone.co.uk | #111,207 | Cloudflare edge/CDN, Google Fonts, Judge.me + 8 more | Find emails |
| squ.edu.om | #111,218 | ASP.NET, Google AdSense, Google Analytics + 6 more | Find emails |
| 3plearning.com | #111,227 | Adobe Fonts (Typekit), Azure DNS, Cloudflare Bot Management + 19 more | Find emails |
| fordbarn.com | #111,239 | Amazon Advertising, Blockthrough, Cloudflare + 13 more | Find emails |
| offcourse.co | #111,242 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| image-net.org | #111,247 | Apache, Google Analytics, Let's Encrypt + 3 more | Find emails |
| webdehasi.com | #111,266 | AOS, Bootstrap, Font Awesome + 13 more | Find emails |
| imcreator.com | #111,284 | Google Cloud, Google Trust Services, Google Workspace + 2 more | Find emails |
| foxestalk.co.uk | #111,304 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| wafbone.com | #111,309 | Google Fonts, Google Hosted Libraries, Let's Encrypt + 2 more | Find emails |
| dow-media.com | #111,336 | Font Awesome, Google Analytics, Google Fonts + 9 more | Find emails |
| hobbii.com | #111,344 | Bugsnag, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| csaonline.de | #111,349 | Bootstrap, Google Fonts, Let's Encrypt + 6 more | Find emails |
| lodgecastiron.com | #111,360 | Attentive, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| posios.com | #111,361 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 14 more | Find emails |
| oneractive.com | #111,383 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 3 more | Find emails |
| accessable.co.uk | #111,391 | AddThis, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| truemetal.it | #111,401 | Bootstrap, Cloudflare, DoubleClick (Google Ads) + 15 more | Find emails |
| bachtrack.com | #111,404 | Apache, Bluesky, Google Analytics + 5 more | Find emails |
| proxyline.net | #111,405 | Django, Google Analytics, Google Tag Manager + 4 more | Find emails |
| roveconcepts.com | #111,408 | Amazon (ACM), Amazon Route 53, Drupal + 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →