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.
| # | 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 |
|---|---|---|---|
| gurneys.com | #62,283 | Adobe Fonts (Typekit), Attentive, Cloudflare edge/CDN + 11 more | Find emails |
| regeneron.com | #62,298 | ASP.NET, Adobe Experience Cloud (Launch), Bootstrap + 12 more | Find emails |
| dreadcentral.com | #62,301 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 9 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| teeinblue.com | #62,315 | Cloudflare, Cloudflare edge/CDN, Crisp + 9 more | Find emails |
| cnas.org | #62,328 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| flipbookpdf.net | #62,340 | Apache, Bootstrap, Cloudflare + 12 more | Find emails |
| brecks.com | #62,388 | Attentive, BrightEdge, Cloudflare edge/CDN + 13 more | Find emails |
| randstad.co.jp | #62,390 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| openspeedtest.com | #62,423 | DoubleClick (Google Ads), Google AdSense, Google Analytics + 4 more | Find emails |
| safeworkaustralia.gov.au | #62,450 | Akamai Bot Manager, Akamai edge/CDN, Drupal + 7 more | Find emails |
| wildflower.org | #62,456 | AddToAny, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| hostkey.com | #62,478 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| adstir.com | #62,487 | Bootstrap, Font Awesome, Google Cloud DNS + 9 more | Find emails |
| drivereasy.com | #62,488 | 2Checkout, Amazon Route 53, Google Analytics + 8 more | Find emails |
| icex.es | #62,498 | Adobe Experience Cloud (Launch), Azure Front Door, DigiCert + 6 more | Find emails |
| tek-tips.com | #62,516 | AdRoll, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| zenplanner.com | #62,519 | Amazon Route 53, Bunny Fonts, HubSpot + 9 more | Find emails |
| fotop.com | #62,547 | Amazon (ACM), Apache, Bootstrap + 15 more | Find emails |
| shaklee.com | #62,549 | CJ Affiliate, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| autopower.bg | #62,565 | Google Tag Manager, Nginx, PHP + 1 more | Find emails |
| magicmadhouse.co.uk | #62,567 | BigCommerce, Bootstrap, Cloudflare + 14 more | Find emails |
| parcelpending.com | #62,587 | Amazon Route 53, Bootstrap, BugHerd + 10 more | Find emails |
| politicsandwar.com | #62,590 | Bootstrap, Cloudflare, Cloudflare Turnstile + 17 more | Find emails |
| adultdvdempire.com | #62,600 | Font Awesome, Let's Encrypt, Ruby on Rails + 1 more | Find emails |
| min-repo.com | #62,607 | Chart.js, DoubleClick (Google Ads), Font Awesome + 12 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 →