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.
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 |
|---|---|---|---|
| telemach.hr | #107,974 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| wicz.com | #107,986 | DoubleClick (Google Ads), Google Fonts, Google Publisher Tag + 6 more | Find emails |
| dynamix.run | #107,988 | Let's Encrypt, Nginx, YouTube + 1 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| pepperbox.tv |
| #108,009 |
| Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more |
| Find emails |
| telemach.ba | #108,017 | Cloudflare edge/CDN, Cookiebot, Google Fonts + 7 more | Find emails |
| nic.sk | #108,049 | Cookiebot, DigiCert, Google Fonts + 6 more | Find emails |
| repsol.es | #108,054 | Adobe Experience Manager Edge Delivery (Helix RUM), Amazon Route 53, Apache + 7 more | Find emails |
| tr-apk.com | #108,059 | DoubleClick (Google Ads), Google AdSense, Google Analytics + 6 more | Find emails |
| adjux.com | #108,068 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| treasurenet.com | #108,072 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| islamansiklopedisi.org.tr | #108,077 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| paltalkconnect.com | #108,079 | Amazon Route 53, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| elitesingles.com | #108,081 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| datasociety.net | #108,083 | Bluesky, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| johnresig.com | #108,099 | Bluesky, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| propermusic.com | #108,114 | Cloudflare edge/CDN, Google Hosted Libraries, Google Tag Manager + 7 more | Find emails |
| waviot.ru | #108,144 | Bitrix, Font Awesome, Google Fonts + 4 more | Find emails |
| supre.com.au | #108,153 | Bazaarvoice, Cloudflare edge/CDN, Google Tag Manager + 9 more | Find emails |
| langehair.com | #108,156 | Amazon Route 53, Attentive, Cloudflare edge/CDN + 12 more | Find emails |
| herald-review.com | #108,158 | Amazon Advertising, Apache, AppNexus + 31 more | Find emails |
| wmf.org | #108,162 | CookieYes, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| treolan.ru | #108,170 | ASP.NET, Chatra, Modernizr + 5 more | Find emails |
| plusnet.co.uk | #108,177 | DigiCert, Dynatrace, Foundation + 3 more | Find emails |
| responsivedesignchecker.com | #108,188 | Apache, DoubleClick (Google Ads), Font Awesome + 3 more | Find emails |
| cyberia.net.sa | #108,196 | Akamai edge/CDN, Akamai mPulse, Google Analytics + 7 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 →