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 |
|---|---|---|---|
| many.link | #44,604 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 9 more | Find emails |
| izzi.mx | #44,638 | Akamai Edge DNS, Amazon CloudFront, Contentful + 11 more | Find emails |
| hypernode.com | #44,647 | Bootstrap, Chargebee, Django + 22 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| hlj.com |
| #44,649 |
| Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 14 more |
| Find emails |
| manucurist.com | #44,738 | Cloudflare edge/CDN, Gorgias, Intelligems + 5 more | Find emails |
| mitsubishicars.com | #44,752 | Adyen, Brightcove, CSC (Digital Brand Services) + 19 more | Find emails |
| isimtescil.net | #44,770 | ASP.NET, Apache, Bootstrap + 9 more | Find emails |
| etherscan.com | #44,779 | ASP.NET, Bootstrap, Cloudflare + 11 more | Find emails |
| edjoin.org | #44,795 | ASP.NET, Amazon Route 53, DigiCert + 10 more | Find emails |
| loopearplugs.com | #44,815 | Cloudflare, Cloudflare edge/CDN, Google Workspace + 5 more | Find emails |
| henryford.com | #44,836 | ASP.NET, Azure API Management, Azure Front Door + 9 more | Find emails |
| zaycev.net | #44,837 | Let's Encrypt, React, styled-components | Find emails |
| joebiden.com | #44,859 | Astro, Cloudflare, Cloudflare Turnstile + 5 more | Find emails |
| internetcalls.com | #44,868 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| outsetmedia.com | #44,881 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 4 more | Find emails |
| macduggal.com | #44,889 | Adobe Fonts, Adobe Fonts (Typekit), Attentive + 11 more | Find emails |
| americangirl.com | #44,904 | Cloudflare edge/CDN, Contentstack, Klaviyo + 7 more | Find emails |
| partycity.com | #44,910 | Attentive, Cloudflare edge/CDN, ConsentMo + 8 more | Find emails |
| uphold.com | #44,917 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 5 more | Find emails |
| hudson.org | #44,918 | Drupal, Fastly, Google Tag Manager + 6 more | Find emails |
| hostseba.com | #44,919 | Bootstrap, Font Awesome, Google Fonts + 12 more | Find emails |
| partselect.com | #44,927 | ASP.NET, AudioEye, Azure API Management + 18 more | Find emails |
| ktar.com | #44,934 | Braze, Cloudflare, Cloudflare Bot Management + 16 more | Find emails |
| magshop.com.au | #44,944 | ASP.NET, Amazon CloudFront, Amazon Route 53 + 15 more | Find emails |
| winknews.com | #44,951 | Blockthrough, Cloudflare, DoubleClick (Google Ads) + 8 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 →