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 |
|---|---|---|---|
| nac-cna.ca | #126,424 | Adobe Fonts (Typekit), Amazon CloudFront, Apache + 13 more | Find emails |
| ever-pretty.com | #126,426 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 13 more | Find emails |
| theglobalist.com | #126,442 | Cloudflare, Font Awesome, Google Fonts + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| youhodler.com | #126,445 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| washtec.com | #126,451 | AOS, Apache, CCM19 + 6 more | Find emails |
| ecipo.hu | #126,462 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| chetu.com | #126,464 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 14 more | Find emails |
| air-journal.fr | #126,476 | AddToAny, Apache, Criteo + 17 more | Find emails |
| luzuk.com | #126,478 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 3 more | Find emails |
| ludus.com | #126,488 | AWS Lambda, Cloudflare, Cloudflare Web Analytics + 20 more | Find emails |
| ticketportal.sk | #126,515 | ASP.NET, Gemius, Google Tag Manager + 4 more | Find emails |
| purely.website | #126,516 | Crisp, Font Awesome, Google Analytics + 10 more | Find emails |
| covercraft.com | #126,547 | Cloudflare edge/CDN, Express, Google Fonts + 9 more | Find emails |
| mechanicalkeyboards.com | #126,597 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 5 more | Find emails |
| rockislandauction.com | #126,600 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Stream + 10 more | Find emails |
| uloz.to | #126,606 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| winni.in | #126,663 | Akamai edge/CDN, Akamai mPulse, Amazon Route 53 + 6 more | Find emails |
| motorcyclespareparts.eu | #126,675 | ASP.NET, Bootstrap, Cloudflare + 14 more | Find emails |
| luontoon.fi | #126,681 | Azure API Management, Azure Front Door, Cookiebot + 3 more | Find emails |
| bancoagrario.gov.co | #126,700 | ASP.NET, AddToAny, Azure Front Door + 8 more | Find emails |
| wob.com | #126,729 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 6 more | Find emails |
| jwpei.com | #126,733 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 7 more | Find emails |
| wilottery.com | #126,739 | ASP.NET, DigiCert, Drupal + 8 more | Find emails |
| alzura.com | #126,766 | Apache, DigiCert, Fancybox + 9 more | Find emails |
| aiprice.com | #126,768 | AOS, Alibaba Cloud CDN, Alibaba Cloud DNS + 9 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 →