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.
| # | 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 |
|---|---|---|---|
| principiaskin.com | #50,207 | Azion, DoubleClick (Google Ads), Google Analytics + 9 more | Find emails |
| vogelbescherming.nl | #50,210 | Adobe Fonts (Typekit), Amazon (ACM), Apache + 9 more | Find emails |
| sootoday.com | #50,249 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| ibef.org | #50,267 | Amazon Route 53, Apache, Bootstrap + 8 more | Find emails |
| domainnetwork.com | #50,296 | Azure Front Door, Bootstrap, Google Tag Manager + 5 more | Find emails |
| intrans.az | #50,297 | Let's Encrypt, Next.js, Nginx + 3 more | Find emails |
| clearlyip.com | #50,309 | Amazon CloudFront, Atlassian Cloud, Bootstrap + 22 more | Find emails |
| botb.com | #50,316 | Amazon (ACM), Amazon CloudFront, AppsFlyer + 11 more | Find emails |
| greensboro.com | #50,333 | 33Across, Advertising.com, Amazon Advertising + 44 more | Find emails |
| commercebank.com | #50,362 | BrightEdge, DigiCert, Font Awesome + 11 more | Find emails |
| pumble.com | #50,383 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 16 more | Find emails |
| stylemixthemes.com | #50,416 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| cxl.com | #50,420 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| vitalant.org | #50,429 | ASP.NET, Adobe Fonts (Typekit), Bootstrap + 17 more | Find emails |
| checkpeople.com | #50,437 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| wildapricot.com | #50,444 | ASP.NET, Adobe Fonts (Typekit), Amazon Route 53 + 17 more | Find emails |
| theeroticreview.com | #50,471 | ASP.NET, Bootstrap, Cloudflare + 6 more | Find emails |
| teleflora.com | #50,473 | Affirm, Amazon Pay, Cloudflare Bot Management + 8 more | Find emails |
| coinspot.com.au | #50,492 | AdRoll, Cloudflare, Cloudflare Bot Management + 4 more | Find emails |
| brusheezy.com | #50,528 | Amazon Advertising, Blockthrough, Cloudflare + 15 more | Find emails |
| swiftreg.co.uk | #50,566 | Bootstrap, ChatGPT Ads Pixel, Cloudflare + 15 more | Find emails |
| wellplated.com | #50,611 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| locationiq.com | #50,640 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 19 more | Find emails |
| portlandleathergoods.com | #50,650 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 8 more | Find emails |
| scale.com | #50,652 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 7 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →