104,545 of the 965,200 top sites in our Tranco top-1M census run Microsoft 365 (10.8%). 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 |
|---|---|---|---|
| whmcs.com | #12,325 | Cloudflare edge/CDN, Google Tag Manager, Google Trust Services + 2 more | Find emails |
| bristol.ac.uk | #12,326 | Google Tag Manager, Sectigo, Termly | Find emails |
| appdome.com | #12,329 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| #30 (Tranco) |
| Find emails |
| 5 | microsoftonline.com | #38 (Tranco) | Find emails |
| tulane.edu |
| #12,346 |
| Cloudflare, Drupal, Fastly + 7 more |
| Find emails |
| pymnts.com | #12,348 | Axios, Bootstrap, Google AdSense + 13 more | Find emails |
| trivago.com | #12,356 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 3 more | Find emails |
| coolors.co | #12,361 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 6 more | Find emails |
| hostelworld.com | #12,366 | Google Cloud DNS, Google Fonts, Google Tag Manager + 4 more | Find emails |
| vrtcal.com | #12,371 | DigiCert, Google Fonts, WordPress + 1 more | Find emails |
| chargepoint.com | #12,374 | Amazon Route 53, Drupal, Fastly + 6 more | Find emails |
| betmgm.com | #12,375 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 1 more | Find emails |
| kununu.com | #12,402 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| uab.edu | #12,419 | Adobe Fonts (Typekit), Font Awesome, Google Tag Manager + 3 more | Find emails |
| ferrari.com | #12,428 | Amazon CloudFront, Cloudflare | Find emails |
| engagelab.com | #12,429 | Amazon Route 53, DigiCert, Google Analytics + 4 more | Find emails |
| carnegieendowment.org | #12,434 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| whc.ca | #12,439 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| oneplus.com | #12,444 | Amazon Route 53, DigiCert, Google Tag Manager + 2 more | Find emails |
| sicoob.com.br | #12,455 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| freeimages.com | #12,456 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| denik.cz | #12,473 | Cloudflare, Cloudflare edge/CDN, Google Publisher Tag + 5 more | Find emails |
| southampton.ac.uk | #12,480 | ConsentMo, DigiCert, Drupal + 1 more | Find emails |
| ibisworld.com | #12,483 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| delfi.ee | #12,497 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 3 more | Find emails |
| mind.org.uk | #12,502 | Cloudflare, Cloudflare edge/CDN, Google Trust Services | 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 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →