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 |
|---|---|---|---|
| campmanager.com | #114,318 | Font Awesome, Google Maps, Google Tag Manager + 6 more | Find emails |
| pillsburylaw.com | #114,337 | Civic Cookie Control, Cloudflare edge/CDN, Fancybox + 15 more | Find emails |
| whatismyip.org | #114,339 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| seeclickfix.com | #114,353 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| solenis.com | #114,370 | Adobe Fonts (Typekit), Azure API Management, Cloudflare + 5 more | Find emails |
| vegasexperience.com | #114,379 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| agendor.com.br | #114,384 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| spoutible.com | #114,396 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| ismworld.org | #114,408 | Microsoft 365, GoDaddy, reCAPTCHA v3 | Find emails |
| tandem.co | #114,410 | Adobe Fonts (Typekit), Apache, Bootstrap + 12 more | Find emails |
| aceplanet.co.kr | #114,413 | Chart.js, Font Awesome, GSAP + 10 more | Find emails |
| mortgageresearchcenter.com | #114,415 | Akamai Bot Manager, Akamai edge/CDN, Akamai mPulse + 8 more | Find emails |
| joyorganics.com | #114,423 | ActiveCampaign, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| groupe-casino.fr | #114,435 | Elementor, Font Awesome, Google Analytics + 6 more | Find emails |
| admiralty.co.uk | #114,436 | Amazon (ACM), Amazon CloudFront, Apache + 7 more | Find emails |
| deafvideo.tv | #114,464 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| boekwinkeltjes.nl | #114,490 | Apache, Font Awesome, Google Analytics + 9 more | Find emails |
| mironet.cz | #114,492 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| insteon.com | #114,498 | Amazon Route 53, Cloudflare edge/CDN, Judge.me + 5 more | Find emails |
| 29.ru | #114,507 | DDoS-Guard, Let's Encrypt | Find emails |
| ciktel.com | #114,528 | ASP.NET, Font Awesome, Google Analytics + 10 more | Find emails |
| iskyhost.net | #114,553 | Bootstrap, Font Awesome, Google Fonts + 11 more | Find emails |
| lmfdb.org | #114,558 | Google Analytics, Google Cloud DNS, Google Hosted Libraries + 7 more | Find emails |
| dm.cz | #114,575 | Let's Encrypt, reCAPTCHA Enterprise | Find emails |
| nbim.no | #114,585 | ASP.NET, Amazon Route 53, Azure API Management + 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-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →