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 |
|---|---|---|---|
| collectorsweekly.com | #62,609 | Azure DNS, Bootstrap, DoubleClick (Google Ads) + 11 more | Find emails |
| guitarguitar.co.uk | #62,654 | ASP.NET, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| goadserver.com | #62,660 | All in One SEO, Google Fonts, Google Tag Manager + 7 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| endesa.com | #62,666 | Adobe Experience Cloud (Launch), Apache, Dynatrace + 5 more | Find emails |
| football24.ru | #62,689 | Cloudflare, DoubleClick (Google Ads), Google AdSense + 10 more | Find emails |
| drawdown.org | #62,690 | Adobe Fonts (Typekit), Bluesky, Campaign Monitor + 17 more | Find emails |
| kaliscan.com | #62,700 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| fredericksburg.com | #62,702 | 33Across, Advertising.com, Amazon Advertising + 44 more | Find emails |
| inside-digital.de | #62,711 | DoubleClick (Google Ads), Google AdSense, Google Publisher Tag + 8 more | Find emails |
| dhl24.com.pl | #62,727 | Bootstrap, Font Awesome, Google Analytics + 5 more | Find emails |
| 23m.com | #62,734 | Bluesky, Cookiebot, Google Tag Manager + 3 more | Find emails |
| hubscuola.it | #62,736 | Amazon (ACM), Amazon Route 53, Apache + 1 more | Find emails |
| travelboutiqueonline.com | #62,773 | ASP.NET, Akamai Bot Manager, Akamai edge/CDN + 11 more | Find emails |
| myapple.pl | #62,774 | Cloudflare, Google AdSense, Google Analytics + 11 more | Find emails |
| mecatechnic.com | #62,775 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| tafeqld.edu.au | #62,792 | Adobe Advertising Cloud, Adobe Audience Manager, Adobe Experience Cloud (Launch) + 19 more | Find emails |
| woodbrass.com | #62,798 | Amazon CloudFront, Cloudflare edge/CDN, Cookiebot + 14 more | Find emails |
| getmailbird.com | #62,839 | Amazon CloudFront, Amazon S3, Bootstrap + 31 more | Find emails |
| mc-host24.de | #62,843 | AOS, Apple Pay, Bootstrap + 17 more | Find emails |
| dimensiondata.com | #62,847 | Akamai edge/CDN, Akamai mPulse, Azure DNS + 6 more | Find emails |
| lep.co.uk | #62,856 | Cloudflare Bot Management, Cloudflare edge/CDN, Dotmetrics + 10 more | Find emails |
| clinikally.com | #62,908 | Amazon Route 53, Cloudflare edge/CDN, Google Fonts + 10 more | Find emails |
| psx.com.pk | #62,934 | AOS, Bootstrap, DataTables + 15 more | Find emails |
| infotracer.com | #62,961 | Amazon CloudFront, Amazon Route 53, Apache + 14 more | Find emails |
| trinity-parts.ru | #62,967 | Bootstrap, Font Awesome, Let's Encrypt + 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →