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.
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 |
|---|---|---|---|
| hizliteknoloji.com.tr | #95,579 | ASP.NET, Bootstrap, Cloudflare + 13 more | Find emails |
| karmanow.com | #95,581 | Amazon CloudFront, Bootstrap, Express + 6 more | Find emails |
| conehealth.com | #95,584 | ASP.NET, Akamai Bot Manager, Akamai edge/CDN + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| turn2us.org.uk | #95,617 | ASP.NET, Cloudflare, Google Tag Manager + 7 more | Find emails |
| fisherpaykel.com | #95,620 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| adctv.com | #95,639 | Cloudflare, Express, Ghost + 9 more | Find emails |
| sennheiser-hearing.com | #95,643 | Amazon Route 53, Azure DNS, Cloudflare edge/CDN + 9 more | Find emails |
| energyandcleanair.org | #95,650 | Bluesky, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| danaher.com | #95,655 | Amazon CloudFront, DigiCert, Drupal + 11 more | Find emails |
| instinet.com | #95,666 | ConsentMo, Drupal, Fastly + 14 more | Find emails |
| atlantis.sk | #95,667 | Cookiebot, DigiCert, Google Fonts + 6 more | Find emails |
| iosco.org | #95,678 | Bluesky, Bootstrap, Cloudflare + 13 more | Find emails |
| sabado.pt | #95,684 | Chartbeat, DoubleClick (Google Ads), Gemius + 11 more | Find emails |
| 1bitcloud.ru | #95,700 | Bitrix, Bootstrap, DDoS-Guard + 12 more | Find emails |
| newengland.com | #95,702 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 13 more | Find emails |
| gratisdns.dk | #95,704 | Let's Encrypt, Next.js, Varnish + 1 more | Find emails |
| godiva.com | #95,713 | Attentive, Bazaarvoice, CSC (Digital Brand Services) + 10 more | Find emails |
| abnewswire.com | #95,716 | Apache, Google Analytics, Google Hosted Libraries + 7 more | Find emails |
| alean.ru | #95,730 | DDoS-Guard, Express, Google Tag Manager + 4 more | Find emails |
| exrx.net | #95,742 | Blockthrough, Bootstrap, Cloudflare + 12 more | Find emails |
| fatio.ae | #95,760 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 4 more | Find emails |
| baen.com | #95,761 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| top.ge | #95,774 | Adform, Admixer, Bootstrap + 9 more | Find emails |
| pic-upload.de | #95,810 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 6 more | Find emails |
| hardcoregamer.com | #95,816 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 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 →