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 |
|---|---|---|---|
| edubirdie.com | #30,923 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 7 more | Find emails |
| expert.de | #30,927 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 3 more | Find emails |
| miele.com | #30,936 | Akamai Edge DNS, DigiCert, Google Tag Manager + 2 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| ascon.ru | #30,953 | Bootstrap, Fancybox, Font Awesome + 16 more | Find emails |
| everlane.com | #31,027 | Attentive, Bugsnag, Builder.io + 9 more | Find emails |
| ecosoberhouse.com | #31,065 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| curative.com | #31,071 | Amazon Route 53, Google Tag Manager, HubSpot + 6 more | Find emails |
| dnsoks.com | #31,072 | GoDaddy Website Builder, GoDaddy | Find emails |
| minnpost.com | #31,077 | DoubleClick (Google Ads), Google Analytics, Google Publisher Tag + 11 more | Find emails |
| enel.it | #31,081 | Adobe Experience Cloud (Launch), Dynatrace, Imperva + 4 more | Find emails |
| trouver-tech.com | #31,102 | Alibaba Cloud DNS, Cloudflare edge/CDN, Google Ads Conversion + 8 more | Find emails |
| parkwhiz.com | #31,106 | Amazon (ACM), Amazon Route 53, AppsFlyer + 5 more | Find emails |
| usc.es | #31,121 | Apache, Drupal, Google Analytics + 7 more | Find emails |
| mtw.ru | #31,125 | Bootstrap, Chart.js, Foundation + 8 more | Find emails |
| somon.tj | #31,152 | AppsFlyer, Cloudflare, DDoS-Guard + 14 more | Find emails |
| pucv.cl | #31,157 | Apache, Cloudflare, Dynatrace + 8 more | Find emails |
| e-flux.com | #31,158 | Cloudflare, Let's Encrypt, Mapbox + 6 more | Find emails |
| studfile.net | #31,159 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| liqu.id | #31,170 | Bootstrap, Cloudflare, Google Hosted Libraries + 6 more | Find emails |
| perforce.com | #31,171 | Adyen, Brightcove, Cloudflare + 24 more | Find emails |
| road.cc | #31,175 | Amazon Route 53, Font Awesome, Google Fonts + 11 more | Find emails |
| sugarsync.com | #31,190 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| api.org | #31,196 | Adobe Fonts (Typekit), Azure DNS, Azure Front Door + 7 more | Find emails |
| facs.org | #31,198 | ASP.NET, Azure Front Door, DigiCert + 10 more | Find emails |
| responsiveads.com | #31,201 | AWS Lambda, Amazon (ACM), Amazon CloudFront + 32 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 →