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 |
|---|---|---|---|
| mobymax.com | #59,297 | AdRoll, Breezy HR, Cloudflare + 20 more | Find emails |
| bestcarweb.jp | #59,321 | Amazon (ACM), Amazon Advertising, Amazon CloudFront + 15 more | Find emails |
| sanwa.co.jp | #59,327 | Amazon Route 53, Font Awesome, Google Analytics + 11 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| engie.be | #59,360 | Amazon Route 53, DigiCert, Drupal + 8 more | Find emails |
| hokkoku.co.jp | #59,403 | Amazon Advertising, CDN Fonts, DigiCert + 14 more | Find emails |
| lindenlab.com | #59,412 | AWS Lambda, Akamai Edge DNS, Cloudflare edge/CDN + 9 more | Find emails |
| evryjewels.com | #59,427 | Cloudflare, Cloudflare edge/CDN, Constructor.io + 6 more | Find emails |
| nilc.org | #59,438 | Adobe Fonts (Typekit), Bluesky, Cloudflare + 18 more | Find emails |
| expresspros.com | #59,454 | ASP.NET, Amazon (ACM), Azure API Management + 17 more | Find emails |
| hepco.co.jp | #59,459 | Azure Front Door, DigiCert, Font Awesome + 6 more | Find emails |
| scriptengine.net | #59,534 | Cloudflare, Cloudflare edge/CDN, Google Workspace + 4 more | Find emails |
| jaomix.ru | #59,539 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| iefp.pt | #59,555 | Azure DNS, DigiCert, Font Awesome + 5 more | Find emails |
| graphene-theme.com | #59,582 | AddThis, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| yellowbot.com | #59,596 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| shqiptarja.com | #59,597 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 11 more | Find emails |
| yoigo.com | #59,622 | Envoy, Google Cloud DNS, Google Fonts + 8 more | Find emails |
| sumaity.com | #59,623 | Adobe Experience Cloud (Launch), Amazon Route 53, Cloudflare Bot Management + 13 more | Find emails |
| hoaxbuster.com | #59,647 | Apache, Bootstrap, Drupal + 15 more | Find emails |
| studio.co.uk | #59,669 | ASP.NET, Akamai Bot Manager, Akamai edge/CDN + 11 more | Find emails |
| nraila.org | #59,672 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 9 more | Find emails |
| hosted-power.com | #59,686 | ConsentMo, Drupal, Font Awesome + 8 more | Find emails |
| bixbit.io | #59,692 | Axios, Bootstrap, Cloudflare + 11 more | Find emails |
| correiodoestado.com.br | #59,703 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| segmanta.com | #59,706 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 21 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 →