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 |
|---|---|---|---|
| mynewterm.com | #131,771 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 20 more | Find emails |
| sansiri.com | #131,776 | ASP.NET, Amazon Route 53, Azure API Management + 16 more | Find emails |
| forex-bitcoin.com | #131,796 | Amazon Route 53, Criteo, Google Analytics + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| sprudge.com | #131,807 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| usi.com | #131,823 | ASP.NET, Azure API Management, Bootstrap + 10 more | Find emails |
| yooco.org | #131,829 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 5 more | Find emails |
| freiercafe.net | #131,833 | Apache, Font Awesome, Google Analytics + 8 more | Find emails |
| payhawk.com | #131,844 | Azure API Management, Cloudflare Turnstile, Cloudflare edge/CDN + 18 more | Find emails |
| nic.auto | #131,856 | Amazon (ACM), Apache, Google Analytics + 6 more | Find emails |
| orenbeer.ru | #131,885 | Bootstrap, Fancybox, Font Awesome + 11 more | Find emails |
| flow.ch | #131,911 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 4 more | Find emails |
| perfectpay.com.br | #131,923 | AOS, Bootstrap, Cloudflare + 22 more | Find emails |
| scentsplit.com | #131,927 | Bootstrap, Cloudflare edge/CDN, Let's Encrypt + 8 more | Find emails |
| colorndrive.com | #131,945 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| normantranscript.com | #131,946 | Blockthrough, Confiant, Empower Local + 11 more | Find emails |
| flashyapp.com | #131,952 | Amazon Route 53, Font Awesome, Google Fonts + 11 more | Find emails |
| cscdbs.com | #131,958 | Azure Front Door, Bootstrap, Google Tag Manager + 5 more | Find emails |
| kizilay.org.tr | #131,972 | Bootstrap, DigiCert, DoubleClick (Google Ads) + 11 more | Find emails |
| epom.com | #131,976 | Apache, Cloudflare edge/CDN, Google Hosted Libraries + 11 more | Find emails |
| coingate.com | #131,990 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 19 more | Find emails |
| hkbnes.net | #132,003 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| cinematerial.com | #132,022 | Bunny CDN, BunnyCDN, Font Awesome + 5 more | Find emails |
| esm-computer.de | #132,040 | Font Awesome, Google Tag Manager, Microsoft 365 + 2 more | Find emails |
| sadc.int | #132,048 | Apache, Cloudflare, Drupal + 7 more | Find emails |
| woxikon.co.uk | #132,066 | Cloudflare, Font Awesome, Google Funding Choices + 5 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 →