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 |
|---|---|---|---|
| tasty.co | #33,343 | Amazon Advertising, Amazon Route 53, Fastly + 7 more | Find emails |
| royallepage.ca | #33,384 | Azure DNS, Google Ads Conversion, Google Analytics + 6 more | Find emails |
| lightricks.com | #33,400 | Amazon Route 53, Cloudflare edge/CDN, GSAP + 11 more | Find emails |
| #291 (Tranco) |
| Find emails |
| 5 | duckdns.org | #295 (Tranco) | Find emails |
| storyblocks.com | #33,410 | Amazon (ACM), Amazon Route 53, ClickTale (Contentsquare) + 7 more | Find emails |
| ip-home.net | #33,418 | Bootstrap, Font Awesome, Nginx + 3 more | Find emails |
| escalax.io | #33,427 | Google Tag Manager, Nginx, Nuxt.js + 3 more | Find emails |
| financial-ombudsman.org.uk | #33,462 | Cloudflare edge/CDN, DigiCert, Google Fonts + 6 more | Find emails |
| serveris.lv | #33,507 | DigiCert, Google Analytics, Google Fonts + 3 more | Find emails |
| tiobe.com | #33,510 | Cookiebot, Google Fonts, Google Tag Manager + 9 more | Find emails |
| atresplayer.com | #33,515 | Amazon Advertising, Amazon Route 53, Fastly + 2 more | Find emails |
| reportlinker.com | #33,549 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| flo.com.tr | #33,556 | Google Cloud DNS, Microsoft 365, reCAPTCHA Enterprise + 1 more | Find emails |
| yesware.com | #33,557 | Amazon Route 53, Cloudflare edge/CDN, Cookiebot + 8 more | Find emails |
| hyperx.com | #33,587 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| advisor.travel | #33,605 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 17 more | Find emails |
| megalink.com | #33,766 | AOS, Bootstrap, Fancybox + 8 more | Find emails |
| cloudsecurityalliance.org | #33,769 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| bdo.com | #33,780 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| spendwithpennies.com | #33,803 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| tv4.se | #33,820 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| iiss.org | #33,852 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 6 more | Find emails |
| iium.edu.my | #33,867 | Bootstrap, Fancybox, Font Awesome + 8 more | Find emails |
| locotech.ru | #33,880 | Google Analytics, Meta Pixel, PHP | Find emails |
| lovecrafts.com | #33,932 | Amazon Route 53, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| hot-chilli.net | #33,978 | Let's Encrypt, Matomo, WordPress + 3 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 →