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 |
|---|---|---|---|
| montana.edu | #16,295 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 10 more | Find emails |
| infor.com | #16,301 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| flowroute.com | #16,304 | AWS WAF, AdRoll, Amazon CloudFront + 26 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| osticket.com | #16,332 | Amazon Route 53, Font Awesome, Google Analytics + 11 more | Find emails |
| honto.jp | #16,335 | A8.net, Adobe Analytics, DoubleClick (Google Ads) + 14 more | Find emails |
| thegamer.com | #16,342 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| devtodev.com | #16,353 | AdRoll, Amazon (ACM), Amazon Route 53 + 15 more | Find emails |
| sparknotes.com | #16,355 | Akamai Bot Manager, Akamai edge/CDN, Blockthrough + 19 more | Find emails |
| archive.md | #16,375 | Let's Encrypt, Nginx, reCAPTCHA v2 | Find emails |
| native-instruments.com | #16,407 | Akamai Edge DNS, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| webhouse.sk | #16,416 | Apache, Bootstrap, Cookiebot + 8 more | Find emails |
| mapgenie.io | #16,430 | Amazon Route 53, Bootstrap, Chartbeat + 10 more | Find emails |
| mocospace.com | #16,440 | Infolinks, reCAPTCHA v2 | Find emails |
| postandcourier.com | #16,443 | Adobe Fonts, Adobe Fonts (Typekit), DoubleClick (Google Ads) + 13 more | Find emails |
| distributorcentral.com | #16,458 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 13 more | Find emails |
| japantoday.com | #16,489 | Adobe Fonts (Typekit), Akamai Edge DNS, Akamai edge/CDN + 6 more | Find emails |
| bridgebase.com | #16,555 | Amazon Advertising, Brevo, DoubleClick (Google Ads) + 17 more | Find emails |
| tokenex.com | #16,574 | 6sense, Algolia, Amazon CloudFront + 30 more | Find emails |
| hyundaiusa.com | #16,577 | Bambuser, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| pocket-lint.com | #16,580 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| qwarta.ru | #16,618 | Google Fonts, Google Hosted Libraries, Let's Encrypt + 5 more | Find emails |
| logos.com | #16,638 | Amazon Route 53, Azure API Management, Google Fonts + 6 more | Find emails |
| zennioptical.com | #16,652 | Akamai Bot Manager, Akamai edge/CDN, Botify + 14 more | Find emails |
| lytehosting.com | #16,676 | ChatGPT Ads Pixel, Cloudflare, Font Awesome + 7 more | Find emails |
| christianpost.com | #16,680 | Adobe Fonts (Typekit), Amazon CloudFront, Cloudflare + 15 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 →