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 |
|---|---|---|---|
| drivercentral.io | #129,751 | Google Analytics, Google Fonts, Google Tag Manager + 7 more | Find emails |
| magnaflow.com | #129,766 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 6 more | Find emails |
| hanger.com | #129,776 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| snapfish.ie | #129,805 | Adobe Experience Cloud (Launch), Akamai edge/CDN, Akamai mPulse + 9 more | Find emails |
| apma.org | #129,807 | ASP.NET, Adobe Fonts (Typekit), Azure Front Door + 13 more | Find emails |
| attackshark.com | #129,818 | Ahrefs Analytics, Bootstrap, Cloudflare + 11 more | Find emails |
| modivo.ua | #129,826 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| chick.com | #129,844 | ASP.NET, Azure API Management, Bootstrap + 15 more | Find emails |
| liveblog365.com | #129,872 | Cloudflare Turnstile, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| portillos.com | #129,886 | ASP.NET, Adobe Fonts (Typekit), Amazon Route 53 + 21 more | Find emails |
| yolanda.hk | #129,899 | Cloudflare edge/CDN, GSAP, Let's Encrypt + 4 more | Find emails |
| atomtes.ru | #129,923 | AOS, Bitrix, Blogger + 6 more | Find emails |
| sabc.co.za | #129,925 | DigiCert, Nginx, WooCommerce + 1 more | Find emails |
| ceop.police.uk | #129,929 | Bootstrap, Civic Cookie Control, DigiCert + 4 more | Find emails |
| linkneverdie.net | #129,938 | ASP.NET, Ahrefs Analytics, Cloudflare + 7 more | Find emails |
| silodrome.com | #129,942 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 16 more | Find emails |
| metasfera.ru | #129,952 | Google Fonts, Google Hosted Libraries, Nginx + 4 more | Find emails |
| dicode.nl | #129,962 | Google Analytics, Microsoft 365, Sectigo + 2 more | Find emails |
| 4icu.org | #129,967 | Apache, Bootstrap, Google AdSense + 11 more | Find emails |
| erajaya.com | #129,971 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| footballleagueworld.co.uk | #129,975 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| fenwick.co.uk | #129,976 | Botify, CSC (Digital Brand Services), ClickTale (Contentsquare) + 11 more | Find emails |
| blix.pl | #129,994 | Cloudflare, Cloudflare edge/CDN, Google Hosted Libraries + 9 more | Find emails |
| cad-comic.com | #130,008 | CleanTalk, Cloudflare, Cloudflare Web Analytics + 14 more | Find emails |
| uscgq.com | #130,017 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 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 →