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 |
|---|---|---|---|
| dejapan.com | #114,949 | All in One SEO, Amazon (ACM), Amazon CloudFront + 12 more | Find emails |
| hooplahosting.co.nz | #114,951 | Adobe Fonts (Typekit), Awin, Bootstrap + 11 more | Find emails |
| moschino.com | #114,968 | Cloudflare edge/CDN, Google Tag Manager, Let's Encrypt + 8 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| windermere.com | #114,969 | Apache, Azure DNS, Bootstrap + 13 more | Find emails |
| pushplanet.com | #114,974 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| shopindetroit.com | #114,976 | ASP.NET, Google AdSense, Google Analytics + 1 more | Find emails |
| usersdrive.com | #114,988 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| protocols.io | #115,001 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 2 more | Find emails |
| wrap.ngo | #115,018 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| klubok.com | #115,036 | Amazon Route 53, Axios, Bootstrap + 12 more | Find emails |
| flipper.net | #115,062 | Cloudflare, Cloudflare edge/CDN, Google Workspace + 4 more | Find emails |
| virbela.com | #115,068 | AWS Lambda, Amazon CloudFront, Amazon S3 + 12 more | Find emails |
| aosom.de | #115,077 | Akamai edge/CDN, Akamai mPulse, Amazon Route 53 + 4 more | Find emails |
| tomi.ai | #115,096 | Google Cloud, Google Cloud DNS, Google Fonts + 11 more | Find emails |
| houseofblues.com | #115,109 | Amazon Route 53, Google Analytics, Google Tag Manager + 7 more | Find emails |
| newsminer.com | #115,116 | DoubleClick (Google Ads), Font Awesome, Google AdSense + 11 more | Find emails |
| paintref.com | #115,121 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 2 more | Find emails |
| beatbot.com | #115,124 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 9 more | Find emails |
| benet.ru | #115,149 | Bootstrap, Google Fonts, Nginx + 6 more | Find emails |
| nacha.org | #115,179 | Cloudflare edge/CDN, Drupal, Fastly + 7 more | Find emails |
| mediaarea.net | #115,208 | Apache, PHP, Sectigo + 1 more | Find emails |
| id.land | #115,226 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| calpaktravel.com | #115,252 | Attentive, Cloudflare edge/CDN, Constructor.io + 12 more | Find emails |
| dealerteamwork.com | #115,281 | Amazon CloudFront, Amazon S3, Apache + 12 more | Find emails |
| nativenewsonline.net | #115,284 | Cloudflare, DoubleClick (Google Ads), Google Analytics + 13 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 →