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 |
|---|---|---|---|
| nvhost.ru | #63,255 | Apache, PHP, Yandex Metrica + 1 more | Find emails |
| stopforumspam.com | #63,275 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 6 more | Find emails |
| mynews13.com | #63,291 | Adobe Experience Cloud (Launch), Adobe Target, Amazon (ACM) + 5 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| dmsu.gov.ua | #63,293 | Akamai Edge DNS, Modernizr, PHP + 1 more | Find emails |
| kwejk.pl | #63,305 | Blockthrough, Cloudflare, Gemius + 6 more | Find emails |
| webhosting-network-services.com | #63,314 | Apache, Modernizr, PHP + 3 more | Find emails |
| halleonard.com | #63,336 | Amazon (ACM), Amazon Route 53, Apache + 9 more | Find emails |
| optimantra.com | #63,337 | AWS Lambda, BugHerd, Cloudflare + 17 more | Find emails |
| findmespot.com | #63,344 | AOS, ASP.NET, Adobe Fonts + 16 more | Find emails |
| willyweather.com | #63,350 | Amazon (ACM), Amazon Route 53, Apache + 3 more | Find emails |
| flazio.com | #63,366 | Apache, Cloudflare, Google Analytics + 6 more | Find emails |
| seatmaps.com | #63,381 | Blockthrough, Confiant, Google Analytics + 8 more | Find emails |
| nwmls.com | #63,383 | Cookiebot, Google Analytics, Google Fonts + 10 more | Find emails |
| freeuseporn.com | #63,392 | Bootstrap, Cloudflare, Google Analytics + 8 more | Find emails |
| rockbitegames.com | #63,400 | BambooHR, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| courrier.jp | #63,419 | Adingo, All in One SEO, Amazon Advertising + 25 more | Find emails |
| wogaa.sg | #63,421 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| getskimmer.com | #63,429 | AWS Lambda, Amazon CloudFront, Ashby + 11 more | Find emails |
| portnox.com | #63,466 | ASP.NET, Azure DNS, Cloudflare Bot Management + 12 more | Find emails |
| smartkargo.com | #63,469 | Adobe Fonts (Typekit), Azure Front Door, Bootstrap + 8 more | Find emails |
| aapd.org | #63,492 | ASP.NET, Amazon Route 53, Bootstrap + 16 more | Find emails |
| spnet.ru | #63,496 | All in One SEO, Bootstrap, Google Fonts + 6 more | Find emails |
| cascadepbs.org | #63,506 | Amazon Route 53, Bluesky, Cloudflare Bot Management + 12 more | Find emails |
| lloydslist.com | #63,527 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| nadex.com | #63,539 | Amazon CloudFront, Amazon S3, Atlassian Cloud + 11 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 →