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 |
|---|---|---|---|
| defenseone.com | #23,985 | Azure DNS, Azure Front Door, Bootstrap + 12 more | Find emails |
| bsi.ac.id | #23,989 | Bootstrap, Cloudflare, Font Awesome + 17 more | Find emails |
| joomag.com | #23,993 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 24 more | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| adaptavist.com | #23,994 | Amazon Route 53, Let's Encrypt, Next.js + 4 more | Find emails |
| humankinetics.com | #24,002 | Cloudflare edge/CDN, Fancybox, Google Tag Manager + 7 more | Find emails |
| hibridosyelectricos.com | #24,006 | Cloudflare, Didomi, Google Analytics + 4 more | Find emails |
| hoidap247.com | #24,018 | AnyMind Group, Cloudflare, Cloudflare Turnstile + 9 more | Find emails |
| tixplus.jp | #24,028 | Amazon (ACM), Amazon Route 53, Apache + 10 more | Find emails |
| prv.pl | #24,032 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| postmarkapp.com | #24,034 | AWS WAF, Amazon Route 53, Bugsnag + 15 more | Find emails |
| dpd.co.uk | #24,037 | Akamai Edge DNS, Fastly, Font Awesome + 12 more | Find emails |
| soloist.ai | #24,059 | Akamai Edge DNS, Fastly, Google Identity Services + 5 more | Find emails |
| zonomi.com | #24,072 | Apache, Google Analytics, Let's Encrypt + 2 more | Find emails |
| gene.com | #24,077 | Amazon CloudFront, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| zipoapps.com | #24,110 | Bootstrap, Fastly, GitHub + 11 more | Find emails |
| nml.com | #24,124 | Adobe Experience Cloud (Launch), Adobe Fonts (Typekit), Amazon CloudFront + 6 more | Find emails |
| digistore24.com | #24,140 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 16 more | Find emails |
| hosting.cl | #24,147 | Apache, Bootstrap, Font Awesome + 5 more | Find emails |
| kuehne-nagel.com | #24,153 | Amazon (ACM), Amazon CloudFront, Google Tag Manager + 7 more | Find emails |
| absa.co.za | #24,164 | Adobe Experience Cloud (Launch), Amazon CloudFront, Apache + 13 more | Find emails |
| hostak.ru | #24,169 | Bitrix, Let's Encrypt, Nginx + 5 more | Find emails |
| okmeter.io | #24,174 | Bootstrap, Google Analytics, Intercom + 5 more | Find emails |
| blurams.com | #24,186 | Amazon Route 53, Cloudflare edge/CDN, DigiCert + 5 more | Find emails |
| techsterowniki.pl | #24,190 | Ahrefs Analytics, Apache, Font Awesome + 6 more | Find emails |
| nylas.com | #24,204 | AOS, Amazon CloudFront, Amazon Route 53 + 26 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 →