CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| missouriquiltco.com | #45,364 | Cloudflare edge/CDN, Google Fonts, Let's Encrypt + 7 more | Find emails |
| ton.com.br | #45,426 | Akamai edge/CDN, Akamai mPulse, Amazon CloudFront + 9 more | Find emails |
| wiline.com | #45,448 | Cloudflare edge/CDN, Google Tag Manager, Google Trust Services + 3 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| macorner.co | #45,480 | Amazon Route 53, Cloudflare edge/CDN, Judge.me + 5 more | Find emails |
| home-appliances.philips | #45,513 | Bazaarvoice, Cloudflare edge/CDN, Let's Encrypt + 7 more | Find emails |
| railways.kz | #45,520 | Google Analytics, Google Tag Manager, Sectigo + 6 more | Find emails |
| eastasiaforum.org | #45,537 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| vitally.io | #45,540 | Amazon Route 53, Cloudflare edge/CDN, Google Fonts + 7 more | Find emails |
| provenwinners.com | #45,543 | Amazon Route 53, Criteo, Drupal + 10 more | Find emails |
| kpler.com | #45,550 | Amazon Route 53, Cloudflare edge/CDN, GSAP + 7 more | Find emails |
| therichest.com | #45,569 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| kitapsec.com | #45,638 | Cloudflare, Nginx, PHP + 1 more | Find emails |
| prefixbox.com | #45,705 | Bootstrap, DigiCert, Font Awesome + 6 more | Find emails |
| xtream.com | #45,843 | BrightEdge, DigiCert, Font Awesome + 5 more | Find emails |
| thegrocer.co.uk | #45,853 | Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Amazon (ACM) + 12 more | Find emails |
| swisslos.ch | #45,887 | Google Tag Manager, Usercentrics, reCAPTCHA v3 | Find emails |
| modivo.pl | #45,904 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| flvs.net | #45,929 | Adobe Fonts (Typekit), Azure DNS, Bootstrap + 6 more | Find emails |
| raymondjames.com | #46,012 | Akamai Bot Manager, Akamai Edge DNS, Akamai mPulse + 4 more | Find emails |
| pricetravel.com | #46,021 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| nbg.gr | #46,023 | Akamai Edge DNS, Cloudflare edge/CDN, DigiCert + 3 more | Find emails |
| losango.com.br | #46,093 | Akamai Edge DNS, Dynatrace, Google Tag Manager + 3 more | Find emails |
| ccrtc.com | #46,141 | Google Fonts, Let's Encrypt, Nginx + 3 more | Find emails |
| houseplans.net | #46,150 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| thumbzilla.com | #46,151 | Amazon Route 53, Google Analytics, Google Tag Manager + 2 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →