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 |
|---|---|---|---|
| nanuminet.com | #68,187 | Apache, DigiCert, Font Awesome + 7 more | Find emails |
| facturama.mx | #68,206 | ASP.NET, Amazon Route 53, Bootstrap + 16 more | Find emails |
| fitnesspark.fr | #68,218 | Amazon (ACM), Amazon CloudFront, Didomi + 6 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| userecho.com |
| #68,232 |
| AOS, Bootstrap, Django + 13 more |
| Find emails |
| 123inkt.nl | #68,233 | Apache, Google Ads Conversion, Google Analytics + 8 more | Find emails |
| racv.com.au | #68,268 | Adobe Advertising Cloud, Adobe Audience Manager, Adobe Experience Cloud (Launch) + 38 more | Find emails |
| koreadates.com | #68,290 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| bandmix.com | #68,301 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 17 more | Find emails |
| rf.ru | #68,317 | Cloudflare, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| verointernet.com.br | #68,320 | Google Analytics, Google Tag Manager, Meta Pixel + 10 more | Find emails |
| magmix.jp | #68,326 | Adingo, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| oberberg-aktuell.de | #68,331 | Bootstrap, DigiCert, Font Awesome + 12 more | Find emails |
| hccnet.nl | #68,335 | AOS, Apache, Bootstrap + 7 more | Find emails |
| fangamer.com | #68,336 | Cloudflare, Cloudflare edge/CDN, Google Workspace + 4 more | Find emails |
| elkhabar.com | #68,358 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 8 more | Find emails |
| newbalance.com.br | #68,384 | Amazon CloudFront, Google Tag Manager, Let's Encrypt + 10 more | Find emails |
| cocoapods.org | #68,385 | Atlassian Cloud, Atlassian Statuspage, Bluesky + 12 more | Find emails |
| samford.edu | #68,386 | ASP.NET, Azure DNS, DoubleClick (Google Ads) + 6 more | Find emails |
| domenomania.pl | #68,397 | Cookiebot, Google Analytics, Google Tag Manager + 6 more | Find emails |
| olympikus.com.br | #68,419 | Amazon CloudFront, Azure DNS, Google Tag Manager + 8 more | Find emails |
| vetstreet.com | #68,428 | Cloudflare Bot Management, Cloudflare edge/CDN, Google AdSense + 9 more | Find emails |
| regonline.com | #68,430 | 6sense, Adobe Experience Cloud (Launch), Amazon (ACM) + 15 more | Find emails |
| techplanet.today | #68,434 | Bluesky, Cloudflare, Cloudflare Web Analytics + 5 more | Find emails |
| icasei.com.br | #68,439 | Amazon Route 53, Cookiebot, DigiCert + 5 more | Find emails |
| sodastream.com | #68,476 | Azure DNS, Bootstrap, Cloudflare edge/CDN + 12 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 →