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 |
|---|---|---|---|
| whatjobs.com | #69,193 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| flybits.com | #69,222 | Amazon Route 53, Font Awesome, Google Analytics + 9 more | Find emails |
| logicieleducatif.fr | #69,225 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| gamenerdz.com | #69,236 | BigCommerce, Cloudflare, Cloudflare Bot Management + 14 more | Find emails |
| gamersupps.gg | #69,245 | Cloudflare edge/CDN, GoAffPro, Gorgias + 5 more | Find emails |
| electricautomationnetwork.com | #69,250 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| firecrawl.dev | #69,256 | Better Uptime, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| incycle.com | #69,258 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 11 more | Find emails |
| mansion-note.com | #69,297 | Amazon (ACM), Amazon Route 53, Nginx | Find emails |
| finology.in | #69,306 | ASP.NET, Adobe Fonts (Typekit), Cloudflare + 10 more | Find emails |
| eforms.com | #69,334 | Adobe Fonts (Typekit), Backbone.js, Cloudflare + 12 more | Find emails |
| farmatodo.com.co | #69,344 | Amplitude, DigiCert, Google Cloud + 3 more | Find emails |
| androides.ru | #69,366 | Cloudflare Turnstile, DataLife Engine, Google Tag Manager + 5 more | Find emails |
| emiratesislamic.ae | #69,374 | Adobe Experience Cloud (Launch), Amazon Route 53, AppDynamics + 9 more | Find emails |
| nativo.com | #69,375 | AWS Lambda, Amazon Route 53, Cloudflare edge/CDN + 11 more | Find emails |
| onnowplay.com | #69,398 | AOS, Bootstrap, Cloudflare + 22 more | Find emails |
| civilim.com | #69,423 | Cloudflare edge/CDN, Fancybox, Google Tag Manager + 8 more | Find emails |
| gardenandgun.com | #69,426 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 10 more | Find emails |
| fcporto.pt | #69,430 | Cloudflare, Cloudflare edge/CDN, DigiCert + 6 more | Find emails |
| revibe.co.za | #69,432 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| acs.org.au | #69,433 | Adobe Experience Cloud (Launch), Bootstrap, Cloudflare + 9 more | Find emails |
| di-di.ru | #69,437 | Bitrix, Google Fonts, Google Tag Manager + 4 more | Find emails |
| ryviu.com | #69,490 | AWS Lambda, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| knigkindom.ru | #69,493 | Bootstrap, Cloudflare, DataLife Engine + 10 more | Find emails |
| cscglobal.com | #69,505 | Azure Front Door, Bootstrap, Google Tag Manager + 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 →