Security & WAF
56,626 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA v2 (5.7%). Google's challenge-response service that verifies whether a site visitor is human or a bot. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA v2 on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | apache.org | #125 (Tranco) | Find emails |
| 2 | w3.org | #184 (Tranco) | Find emails |
| 3 | pushy.io | #467 (Tranco) | Find emails |
| 4 | sharethrough.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| flydigi.com | #224,396 | ClickTale (Contentsquare), Cloudflare edge/CDN, Google Trust Services + 5 more | Find emails |
| free-proxy.cz | #224,437 | Cloudflare, Google AdSense, Google Analytics + 6 more | Find emails |
| sadva.pl | #224,492 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 8 more | Find emails |
| #594 (Tranco) |
| Find emails |
| 5 | cdnvideo.ru | #598 (Tranco) | Find emails |
| rgukt.ac.in | #224,537 | Bootstrap, Font Awesome, Google Cloud + 7 more | Find emails |
| elitefts.com | #224,551 | AdRoll, Bugsnag, Cloudflare Turnstile + 19 more | Find emails |
| 3dsellers.com | #224,565 | AWS Lambda, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| smtplw.com.br | #224,571 | Google Analytics, Google Fonts, Google Tag Manager + 1 more | Find emails |
| koorong.com | #224,619 | Amazon Route 53, Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| enet-tr.com | #224,629 | Apache, Font Awesome, Google Fonts + 6 more | Find emails |
| amcwebsoft.ro | #224,675 | Fancybox, Font Awesome, Ghost + 7 more | Find emails |
| tasr.sk | #224,729 | Fancybox, Gemius, Google Analytics + 7 more | Find emails |
| expcinema.org | #224,753 | Cloudflare, Cloudflare edge/CDN, Drupal + 14 more | Find emails |
| artfulhome.com | #224,787 | Adobe Fonts (Typekit), Cloudflare edge/CDN, DoubleClick (Google Ads) + 12 more | Find emails |
| modernlivingcalifornia.com | #224,796 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 9 more | Find emails |
| thesleepdoctor.com | #224,801 | Cloudflare edge/CDN, Convert, DebugBear + 13 more | Find emails |
| todoexpertos.com | #224,805 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| commercelayer.io | #224,816 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 19 more | Find emails |
| pedspandemicnetwork.org | #224,832 | Amazon Route 53, Divi, Google Analytics + 8 more | Find emails |
| rankwatch.com | #224,838 | Bootstrap, Cloudflare, Cloudflare Bot Management + 19 more | Find emails |
| spizoo.com | #224,861 | AOS, Apache, Bootstrap + 7 more | Find emails |
| olr.com | #224,890 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| winchester.com | #224,900 | Azure API Management, Bazaarvoice, Chart.js + 7 more | Find emails |
| alumni.net | #224,904 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| squamishchief.com | #224,908 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| parknpool.com | #224,926 | Cloudflare, Cloudflare edge/CDN, Google Maps + 6 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 →