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 |
|---|---|---|---|
| examsoft.com | #42,483 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| partnerstack.com | #42,583 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| unpri.org | #42,620 | Adyen, Brightcove, Cloudflare + 14 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| conad.it | #42,636 | Adobe Experience Cloud (Launch), Azure DNS, DigiCert + 4 more | Find emails |
| entrykeyid.com | #42,693 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| agentprocessing.com | #42,707 | Let's Encrypt, Nginx, PHP + 2 more | Find emails |
| verabradley.com | #42,753 | Adobe Fonts (Typekit), Akamai Edge DNS, Cloudflare edge/CDN + 10 more | Find emails |
| ikentoo.com | #42,774 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 13 more | Find emails |
| skatteetaten.no | #42,783 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 2 more | Find emails |
| pportale.pl | #42,815 | Font Awesome, Google Analytics, Google Tag Manager + 6 more | Find emails |
| expedient.com | #42,838 | 6sense, Cloudinary, Font Awesome + 7 more | Find emails |
| krautmtrk.com | #42,873 | GoDaddy Website Builder, GoDaddy | Find emails |
| game.es | #42,968 | ASP.NET, ConsentMo, Cookiebot + 6 more | Find emails |
| mathnasium.com | #42,972 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| videosift.com | #43,011 | Let's Encrypt, Nginx, reCAPTCHA v2 | Find emails |
| paxhistoria.co | #43,045 | Cloudflare, Let's Encrypt, Next.js + 4 more | Find emails |
| hongkongfp.com | #43,046 | Cloudflare, Google Analytics, Google Publisher Tag + 9 more | Find emails |
| glossier.com | #43,057 | Cloudflare, Cloudflare edge/CDN, Global-e + 11 more | Find emails |
| chime.me | #43,080 | Amazon Route 53, ChatGPT Ads Pixel, Cloudflare Bot Management + 6 more | Find emails |
| orlandoweekly.com | #43,087 | Cloudflare, Google Analytics, Google Tag Manager + 7 more | Find emails |
| jadedldn.com | #43,162 | Attentive, Cloudflare edge/CDN, Global-e + 10 more | Find emails |
| londonist.com | #43,178 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| zingplay.com | #43,206 | DigiCert, Google Analytics, Google Tag Manager + 5 more | Find emails |
| care.org | #43,262 | BrightEdge, Fastly, Google Tag Manager + 13 more | Find emails |
| sololearn.com | #43,281 | Bugsnag, Cloudflare, Cloudflare Turnstile + 5 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 →