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 |
|---|---|---|---|
| pwnews.net | #72,843 | Cloudflare, Font Awesome, Google AdSense + 10 more | Find emails |
| instamojo.com | #72,866 | Amazon Route 53, Amazon S3, Brevo + 15 more | Find emails |
| cencosud.com | #72,879 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 15 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| avanta-telecom.ru |
| #72,893 |
| Google Analytics, Google Tag Manager, Let's Encrypt + 4 more |
| Find emails |
| warwickshire.gov.uk | #72,896 | Amazon (ACM), BrowseAloud, FreePrivacyPolicy + 10 more | Find emails |
| effectssdk.ai | #72,926 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| anistar.org | #72,927 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| nic.rent | #72,936 | Amazon (ACM), Apache, Google Fonts + 5 more | Find emails |
| cirrus.com | #72,956 | Amazon CloudFront, Amazon Route 53, DigiCert + 8 more | Find emails |
| tumblebooklibrary.com | #72,958 | ASP.NET, DigiCert, Font Awesome + 6 more | Find emails |
| bancatransilvania.ro | #72,964 | Akamai Edge DNS, Akamai edge/CDN, AppNexus (Xandr) + 2 more | Find emails |
| vpauto.fr | #72,977 | Avis Vérifiés, Azure DNS, Cloudflare Web Analytics + 14 more | Find emails |
| euroclix.nl | #72,984 | Apache, Bootstrap, Font Awesome + 8 more | Find emails |
| shiftbase.com | #72,990 | Chargebee, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| webnode.it | #73,003 | Amazon Route 53, Convert, DoubleClick (Google Ads) + 7 more | Find emails |
| unikum.net | #73,023 | Cloudflare Bot Management, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 more | Find emails |
| ssbwiki.com | #73,082 | Amazon Advertising, Blockthrough, Confiant + 8 more | Find emails |
| tripoto.com | #73,095 | Cloudflare, Font Awesome, Google Analytics + 4 more | Find emails |
| nowlifestyle.com | #73,100 | Bootstrap, Font Awesome, Google Fonts + 10 more | Find emails |
| 6annonce.net | #73,108 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| joinsmarty.com | #73,109 | Checkout.com, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| alexandani.com | #73,119 | Amazon Route 53, Cloudflare edge/CDN, DigitalOcean Spaces + 7 more | Find emails |
| finofilipino.org | #73,120 | AddToAny, Cloudflare, Disqus + 12 more | Find emails |
| lifespan.org | #73,138 | ASP.NET, Cloudflare edge/CDN, Drupal + 10 more | Find emails |
| odcr.com | #73,157 | Google AdSense, Google Fonts, Google Hosted Libraries + 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →