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.
| # | 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 |
|---|---|---|---|
| foodandwaterwatch.org | #69,864 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| paloaltoonline.com | #69,880 | Chartbeat, Cloudflare, DoubleClick (Google Ads) + 13 more | Find emails |
| ngs24.ru | #69,881 | DDoS-Guard, Let's Encrypt | Find emails |
| #184 (Tranco) |
| Find emails |
| 5 | taboola.com | #187 (Tranco) | Find emails |
| linoit.com | #69,882 | Amazon Route 53, Apache, DigiCert + 4 more | Find emails |
| edie.net | #69,897 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| visajourney.com | #69,914 | Amazon Advertising, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| marqeta.com | #69,915 | Amazon CloudFront, Atlassian Cloud, Atlassian Statuspage + 15 more | Find emails |
| calculoexato.com.br | #69,916 | ASP.NET, DoubleClick (Google Ads), Google Ads Conversion + 8 more | Find emails |
| books.ru | #69,956 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| dakboard.com | #69,957 | Apache, Bootstrap, Cloudflare edge/CDN + 19 more | Find emails |
| dream2000.com | #69,971 | Cloudflare edge/CDN, Google Fonts, Let's Encrypt + 5 more | Find emails |
| lafa.site | #69,976 | Adlook, Cloudflare, DDoS-Guard + 8 more | Find emails |
| scentsnstories.pk | #69,988 | Cloudflare, Cloudflare edge/CDN, Google Hosted Libraries + 8 more | Find emails |
| aihumanize.io | #70,004 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| health.org.uk | #70,007 | Adyen, Akamai Bot Manager, Bluesky + 20 more | Find emails |
| nasscom.in | #70,018 | AOS, Amazon Route 53, Drupal + 8 more | Find emails |
| medicana.com.tr | #70,019 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| tecoenergy.com | #70,032 | ASP.NET, Azure API Management, Bootstrap + 12 more | Find emails |
| moonscan.io | #70,065 | ASP.NET, Bootstrap, Cloudflare + 10 more | Find emails |
| hsdp.io | #70,075 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 14 more | Find emails |
| labusinessjournal.com | #70,079 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 more | Find emails |
| ua-hosting.company | #70,085 | DigiCert, Font Awesome, Google Analytics + 5 more | Find emails |
| phonoscope.com | #70,088 | AWS Lambda, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| videoclip.bg | #70,114 | Amazon Route 53, Google Analytics, Google Tag Manager + 8 more | Find emails |
| newsroom.co.nz | #70,128 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →