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 |
|---|---|---|---|
| hostifi.net | #43,970 | AWS Lambda, Ahrefs Analytics, Beehiiv + 18 more | Find emails |
| hostfly.by | #44,011 | Bitrix, Font Awesome, Google Analytics + 11 more | Find emails |
| pontiac.media | #44,030 | Amazon (ACM), Amazon Route 53, Apache + 13 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| digital-catalogue.com |
| #44,036 |
| Ahrefs Analytics, Amazon Route 53, Font Awesome + 7 more |
| Find emails |
| vivor.net | #44,042 | YouTube, jQuery, reCAPTCHA v2 | Find emails |
| consumercellular.com | #44,055 | Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Cloudflare + 13 more | Find emails |
| verizonconnect.com | #44,077 | Algolia, Amazon Route 53, Cloudflare edge/CDN + 7 more | Find emails |
| pagefly.io | #44,113 | Amplitude, Cloudflare edge/CDN, Crisp + 12 more | Find emails |
| game.co.uk | #44,130 | ASP.NET, Akamai Bot Manager, Akamai Edge DNS + 9 more | Find emails |
| 2ndstreet.jp | #44,138 | Akamai Bot Manager, Akamai edge/CDN, Apache + 7 more | Find emails |
| pixta.jp | #44,168 | Amazon (ACM), Amazon Route 53, Envoy + 8 more | Find emails |
| oryxgaming.com | #44,181 | Cloudflare, Cloudflare edge/CDN, Sectigo + 3 more | Find emails |
| resilans.se | #44,184 | Apache, Google Maps, Let's Encrypt + 2 more | Find emails |
| li.ru | #44,220 | Let's Encrypt, LiveInternet (Yadro), Nginx + 3 more | Find emails |
| oneweb.pro | #44,229 | Fancybox, Let's Encrypt, Nginx + 4 more | Find emails |
| deltadentalins.com | #44,236 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Apache + 7 more | Find emails |
| valeursactuelles.com | #44,263 | Amazon CloudFront, Bootstrap, Chartbeat + 12 more | Find emails |
| ipregistry.co | #44,267 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| svb.com | #44,286 | ASP.NET, Adobe Experience Cloud (Launch), Azure API Management + 17 more | Find emails |
| pickaweb.co.uk | #44,288 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| saffire.com | #44,305 | ASP.NET, AdRoll, Azure DNS + 12 more | Find emails |
| projectnoah.org | #44,321 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| all4webs.com | #44,326 | AddThis, Cloudflare, Cloudflare Web Analytics + 4 more | Find emails |
| neterra.net | #44,330 | Apache, Bootstrap, Google Tag Manager + 10 more | Find emails |
| unieuro.it | #44,332 | AppNexus, Awin, ClickTale (Contentsquare) + 23 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 →