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 |
|---|---|---|---|
| mackinac.org | #116,194 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| yduqs.com.br | #116,234 | AOS, ASP.NET, AddToAny + 15 more | Find emails |
| focusgn.com | #116,236 | Auth0, Bootstrap, Cloudflare + 11 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| expandeo.com |
| #116,244 |
| Bootstrap, Cloudflare, Cloudflare Web Analytics + 12 more |
| Find emails |
| thelocal.ch | #116,255 | Adnami, Bluesky, DoubleClick (Google Ads) + 10 more | Find emails |
| cellc.co.za | #116,269 | AppDynamics, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| calendarwiz.com | #116,272 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| unioncamtech.com | #116,295 | GoDaddy Website Builder, GoDaddy | Find emails |
| zippyonline.com | #116,296 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 8 more | Find emails |
| scholl-shoes.com | #116,322 | Cloudflare edge/CDN, Cookiebot, Google Hosted Libraries + 10 more | Find emails |
| moogmusic.com | #116,347 | Adobe Fonts (Typekit), Algolia, Amazon (ACM) + 10 more | Find emails |
| rocket.net | #116,422 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| ffclub.ru | #116,429 | Google AdSense, Google Analytics, Google Hosted Libraries + 11 more | Find emails |
| planradar.com | #116,441 | Adobe Fonts (Typekit), Calendly, Cloudflare + 12 more | Find emails |
| atlanticbooks.com | #116,446 | Cloudflare edge/CDN, Judge.me, Klaviyo + 7 more | Find emails |
| vdh.de | #116,449 | Consentmanager.net, Google Analytics, Google Tag Manager + 6 more | Find emails |
| interbest.net | #116,453 | Apache, Font Awesome, PHP + 3 more | Find emails |
| topg.org | #116,471 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| litecoinpool.org | #116,473 | Cloudflare Turnstile, Google Fonts, Google Hosted Libraries + 4 more | Find emails |
| sac-it.dk | #116,480 | ClickTale (Contentsquare), Cookiebot, Google Analytics + 4 more | Find emails |
| herroom.com | #116,481 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| wrappiness.co | #116,490 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 9 more | Find emails |
| meetcam.tv | #116,492 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| sleepadvisor.org | #116,508 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| tincan.kids | #116,510 | Cloudflare, Cloudflare edge/CDN, GrowthBook + 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 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 →