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 |
|---|---|---|---|
| themewagon.com | #28,170 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| kiabi.es | #28,173 | DataDome, Fastly, Google Cloud DNS + 1 more | Find emails |
| opnsense.org | #28,179 | Adobe Fonts (Typekit), Apache, Bluesky + 8 more | Find emails |
| #30 (Tranco) |
| Find emails |
| 5 | microsoftonline.com | #38 (Tranco) | Find emails |
| emsisoft.com | #28,195 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 6 more | Find emails |
| swann.com | #28,215 | Attentive, Bazaarvoice, BigCommerce + 16 more | Find emails |
| vfc.com | #28,224 | Akamai Edge DNS, Apache, Google Analytics + 7 more | Find emails |
| threatpost.com | #28,230 | DigiCert, Google Tag Manager, Nginx + 3 more | Find emails |
| indoleads.com | #28,253 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| cleartax.co | #28,254 | GoDaddy | Find emails |
| bangor.ac.uk | #28,255 | ConsentMo, Drupal, Font Awesome + 10 more | Find emails |
| cbs12.com | #28,262 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 8 more | Find emails |
| governing.com | #28,267 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| asc.edu | #28,271 | Apache, Drupal, Google Analytics + 3 more | Find emails |
| tabletmag.com | #28,289 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 9 more | Find emails |
| gls-group.eu | #28,291 | Apache, Consentmanager.net, DigiCert + 1 more | Find emails |
| enea.it | #28,302 | — | Find emails |
| projectk.org | #28,305 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| belugacdn.com | #28,326 | AdRoll, AngularJS, Bootstrap + 25 more | Find emails |
| legal500.com | #28,333 | Adobe Fonts (Typekit), Ashby, Cloudflare + 12 more | Find emails |
| aveva.com | #28,337 | Adobe Experience Cloud (Launch), Amazon CloudFront, Amazon S3 + 18 more | Find emails |
| icomera.com | #28,356 | AOS, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| mintel.com | #28,365 | Amazon CloudFront, Amazon Route 53, CookieYes + 4 more | Find emails |
| everyaction.com | #28,371 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| hofstra.edu | #28,396 | AOS, Adobe Fonts (Typekit), Amazon (ACM) + 11 more | Find emails |
| ezyvet.com | #28,398 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 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 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →