CAPTCHA & Bot Protection
56,649 of the 965,200 top sites in our Tranco top-1M census run reCAPTCHA (5.9%). 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 | one.one | #160 (Tranco) | Find emails |
| 2 | pki.goog | #218 (Tranco) | Find emails |
| 3 | t-online.de | #220 (Tranco) | Find emails |
| 4 | dnsmadeeasy.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| naba.it | #204,629 | Cloudflare, Google Fonts, Google Tag Manager + 6 more | Find emails |
| exchmarket.net | #204,634 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 3 more | Find emails |
| vasafitness.com | #204,653 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| scratchpay.com | #204,717 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| delsey.com | #204,719 | Botify, Cloudflare edge/CDN, Global-e + 4 more | Find emails |
| banarasee.in | #204,734 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 4 more | Find emails |
| hortidaily.com | #204,747 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 3 more | Find emails |
| tajmi.com | #204,748 | Cloudflare edge/CDN, Let's Encrypt, Shopify + 4 more | Find emails |
| wataugademocrat.com | #204,796 | Amazon Route 53, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| childbereavementuk.org | #204,798 | ASP.NET, Adobe Fonts (Typekit), Braintree + 13 more | Find emails |
| myheritage.cz | #204,808 | Amazon CloudFront, ConsentMo, DigiCert + 4 more | Find emails |
| part-time.ie | #204,815 | Google Fonts, Let's Encrypt, Meta Pixel + 5 more | Find emails |
| miltonkeynes.co.uk | #204,821 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Cloud DNS + 5 more | Find emails |
| psy.su | #204,844 | Let's Encrypt, Nginx, PHP + 1 more | Find emails |
| alicante.com.ar | #204,868 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| hockshoes.com | #204,872 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 3 more | Find emails |
| mbasics.pk | #204,921 | Cloudflare, Cloudflare edge/CDN, Google Workspace + 6 more | Find emails |
| mushq.com | #204,925 | Cloudflare edge/CDN, Let's Encrypt, Lucky Orange + 5 more | Find emails |
| ejournals.ph | #204,965 | Font Awesome, Google Analytics, Google Tag Manager + 7 more | Find emails |
| instafinancials.com | #204,991 | Bootstrap, Font Awesome, Google Tag Manager + 2 more | Find emails |
| oyaschool.com | #205,002 | Font Awesome, Google Fonts, Let's Encrypt + 6 more | Find emails |
| expediacruises.com | #205,011 | ASP.NET, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| craftoutlet.com | #205,069 | Cloudflare, Cloudflare edge/CDN, Judge.me + 5 more | Find emails |
| d-services.ru | #205,081 | Let's Encrypt, Nginx, reCAPTCHA v2 + 1 more | Find emails |
| jware.hr | #205,085 | Bootstrap, Font Awesome, Google Maps + 6 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →