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 |
|---|---|---|---|
| schoolloop.com | #71,484 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 16 more | Find emails |
| fanforus.com | #71,502 | Cloudflare, Cloudflare edge/CDN, Fingerprint Pro + 7 more | Find emails |
| cosedicasa.com | #71,511 | Let's Encrypt, Nginx, WordPress + 1 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| mundijuegos.com | #71,515 | Amazon Route 53, AppsFlyer, Envoy + 11 more | Find emails |
| pangaea.de | #71,523 | Bootstrap, Google Fonts, Leaflet + 8 more | Find emails |
| uptain.de | #71,545 | Amazon CloudFront, Amazon S3, Chatbase + 17 more | Find emails |
| upu.int | #71,564 | ASP.NET, DigiCert, Font Awesome + 8 more | Find emails |
| santalolla.com.br | #71,567 | Amazon CloudFront, Amazon Route 53, Google Tag Manager + 9 more | Find emails |
| bulsat.com | #71,590 | Cookiebot, DigiCert, Google Fonts + 6 more | Find emails |
| farmatodo.com.ve | #71,594 | Amplitude, DigiCert, Google Cloud + 4 more | Find emails |
| licious.in | #71,610 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| pollin.de | #71,611 | Bunny CDN, BunnyCDN, Cloudflare Turnstile + 5 more | Find emails |
| wedbush.com | #71,616 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| trenord.it | #71,631 | Akamai Edge DNS, Akamai edge/CDN, Akamai mPulse + 12 more | Find emails |
| reversephone.com | #71,640 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 11 more | Find emails |
| mellojoyjapan.com | #71,652 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 3 more | Find emails |
| kvoa.com | #71,654 | Amazon Route 53, Blockthrough, Chartbeat + 7 more | Find emails |
| aircraftspruce.com | #71,680 | Apache, Fancybox, Font Awesome + 10 more | Find emails |
| bubbleroom.se | #71,703 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 8 more | Find emails |
| sae.digital | #71,711 | AOS, Amazon CloudFront, Amazon S3 + 22 more | Find emails |
| mypeopledoc.com | #71,722 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| claires.com | #71,724 | Cloudflare Bot Management, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| gromada.org.ua | #71,729 | CKEditor, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| slopeonline.online | #71,744 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| velesmoda.ru | #71,749 | Bootstrap, Cloudflare, Diginetica + 18 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 →