108,582 of the 1,000,000 top sites in our Tranco top-1M census run Microsoft 365 (10.9%). Microsoft's subscription suite of productivity apps and services, including Exchange Online email hosting. Detection is homepage-level HTML/header fingerprinting, so a site can run Microsoft 365 on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | microsoft.com | #6 (Tranco) | Find emails |
| 2 | azure.com | #26 (Tranco) | Find emails |
| 3 | github.com | #29 (Tranco) | Find emails |
| 4 | bing.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| idc.jp | #30,481 | — | Find emails |
| kcci.com | #30,515 | Amazon Advertising, Amazon Route 53, Casale Media + 15 more | Find emails |
| elcomercio.com | #30,517 | Bootstrap, Cloudflare edge/CDN, WordPress + 1 more | Find emails |
| #30 (Tranco) |
| Find emails |
| 5 | microsoftonline.com | #38 (Tranco) | Find emails |
| parcellab.com |
| #30,519 |
| Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more |
| Find emails |
| endress.com | #30,524 | Akamai edge/CDN, Akamai mPulse, Let's Encrypt + 1 more | Find emails |
| crainsnewyork.com | #30,533 | Adobe Experience Cloud (Launch), Akamai edge/CDN, Akamai mPulse + 7 more | Find emails |
| ar15.com | #30,541 | ASP.NET, Cloudflare, Cloudflare Turnstile + 6 more | Find emails |
| samanage.com | #30,542 | Amazon Route 53, Builder.io, DigiCert + 4 more | Find emails |
| botframework.com | #30,544 | ASP.NET, Azure DNS, DigiCert | Find emails |
| actionkit.com | #30,556 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| aaaai.org | #30,560 | ASP.NET, Bluesky, Cloudflare Bot Management + 9 more | Find emails |
| education.gov.uk | #30,563 | Amazon Route 53, Fastly, Nginx + 2 more | Find emails |
| owenscorning.com | #30,585 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 4 more | Find emails |
| newsweaver.com | #30,588 | Amazon Route 53, Google Tag Manager, HubSpot + 6 more | Find emails |
| ntuh.gov.tw | #30,591 | — | Find emails |
| lmu.edu | #30,593 | Amazon (ACM), Amazon Route 53, Apache + 4 more | Find emails |
| marketo.co.uk | #30,610 | Cloudflare edge/CDN | Find emails |
| adblockultimate.net | #30,623 | Amazon CloudFront, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| peterlang.com | #30,636 | Adobe Fonts (Typekit), Google Maps, Google Tag Manager + 6 more | Find emails |
| utsystem.edu | #30,640 | Drupal, Google Analytics, Google Tag Manager + 4 more | Find emails |
| hotschedules.com | #30,652 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare Bot Management + 10 more | Find emails |
| shop.com | #30,653 | Cloudflare Bot Management, Cloudflare edge/CDN | Find emails |
| entertainmentearth.com | #30,698 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 2 more | Find emails |
| edp24.co.uk | #30,707 | Amazon Advertising, Azure DNS, Azure Front Door + 11 more | Find emails |
| nic.art | #30,727 | Fastly, Google Tag Manager, Let's Encrypt + 2 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 →