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 |
|---|---|---|---|
| zonealpha.in | #215,257 | Cloudflare edge/CDN, Google Analytics, Google Fonts + 7 more | Find emails |
| zoniya.com | #215,258 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 4 more | Find emails |
| mondayswimwear.com | #215,288 | Cloudflare edge/CDN, GSAP, Global-e + 11 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| pharmazone.com | #215,290 | Algolia, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| hellohealthgroup.com | #215,302 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 4 more | Find emails |
| foco.com | #215,312 | AdRoll, Amazon Route 53, Attentive + 10 more | Find emails |
| spacecrafted.com | #215,329 | Adobe Fonts (Typekit), DigiCert, Google Analytics + 4 more | Find emails |
| claim.md | #215,331 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| lttstore.com | #215,333 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| veriheal.com | #215,352 | Amazon Route 53, Bootstrap, Font Awesome + 18 more | Find emails |
| matrixbcg.com | #215,360 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 4 more | Find emails |
| airedealmeria.com | #215,372 | Bootstrap, Cookiebot, CrazyEgg + 11 more | Find emails |
| rr.pt | #215,378 | Azure DNS, DigiCert, Font Awesome + 5 more | Find emails |
| xbrl.org | #215,382 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| americanstaffing.net | #215,399 | Bootstrap, Font Awesome, Google Fonts + 11 more | Find emails |
| mydnshost.co.uk | #215,416 | Bootstrap, Fastmail, Let's Encrypt + 4 more | Find emails |
| ml-cc.com | #215,422 | AOS, Cloudflare, Font Awesome + 12 more | Find emails |
| 2link.be | #215,426 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 4 more | Find emails |
| motocentral.co.uk | #215,429 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| stiiizy.com | #215,463 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 7 more | Find emails |
| airedevallromanes.com | #215,499 | Bootstrap, Cookiebot, CrazyEgg + 11 more | Find emails |
| brucebolt.us | #215,504 | Cloudflare edge/CDN, Google Tag Manager, Gorgias + 11 more | Find emails |
| roadid.com | #215,515 | Attentive, Cloudflare edge/CDN, ConsentMo + 8 more | Find emails |
| harrypottershop.jp | #215,541 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Let's Encrypt + 6 more | Find emails |
| popilush.com | #215,599 | Cloudflare edge/CDN, Google Tag Manager, 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 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 →