CAPTCHA & Bot Protection
90,376 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA (9%). 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 |
|---|---|---|---|
| wfonts.com | #40,638 | ASP.NET, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| americangreetings.com | #40,660 | Akamai edge/CDN, Akamai mPulse, Amazon Route 53 + 9 more | Find emails |
| select-type.com | #40,678 | Amazon (ACM), Amazon Route 53, Bootstrap + 16 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| thebookseller.com | #40,687 | Amazon (ACM), Apache, Awin + 13 more | Find emails |
| gl-inet.com | #40,699 | Cloudflare, Cloudflare edge/CDN, CrazyEgg + 10 more | Find emails |
| mobifone.vn | #40,703 | Font Awesome, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| icollector.com | #40,704 | ASP.NET, All in One SEO, Amazon (ACM) + 10 more | Find emails |
| pedigreedatabase.com | #40,739 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| womenshistory.org | #40,760 | AddThis, Bootstrap, Cloudflare + 14 more | Find emails |
| fantlab.ru | #40,778 | Bootstrap, Fancybox, Let's Encrypt + 5 more | Find emails |
| fmgsuite.com | #40,800 | Amazon Route 53, Cloudflare edge/CDN, CrazyEgg + 10 more | Find emails |
| pr.com | #40,810 | Amazon (ACM), Amazon Route 53, Apache + 7 more | Find emails |
| imx.to | #40,812 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| youbroadband.in | #40,830 | AngularJS, Bootstrap, DoubleClick (Google Ads) + 11 more | Find emails |
| conflictnations.com | #40,831 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| acomics.ru | #40,836 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| demio.com | #40,853 | 6sense, AWS Lambda, Adobe Fonts (Typekit) + 13 more | Find emails |
| ohiolink.edu | #40,861 | Drupal, Fastly, Google Analytics + 6 more | Find emails |
| uwc.ac.za | #40,862 | ASP.NET, Bootstrap, Dynatrace + 7 more | Find emails |
| bike-discount.de | #40,880 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 3 more | Find emails |
| creditreform.de | #40,891 | Fancybox, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| sportsshoes.com | #40,895 | Cloudflare, Cloudflare edge/CDN, Next.js + 6 more | Find emails |
| dollarshaveclub.com | #40,902 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 12 more | Find emails |
| hm.plus | #40,952 | Bootstrap, Cloudflare, Google Fonts + 8 more | Find emails |
| dailyuploads.net | #40,953 | BootCDN, Bootstrap, Cloudflare + 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-2026-08-24-full), snapshot August 24, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →