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 |
|---|---|---|---|
| albany.edu | #13,780 | Bluesky, Bootstrap, Cloudflare edge/CDN + 12 more | Find emails |
| heraldscotland.com | #13,782 | Amazon Advertising, Azure DNS, Azure Front Door + 11 more | Find emails |
| mediago.com | #13,786 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| #30 (Tranco) |
| Find emails |
| 5 | microsoftonline.com | #38 (Tranco) | Find emails |
| blackline.com | #13,804 | Cloudflare edge/CDN, Google Cloud DNS, Google Trust Services + 3 more | Find emails |
| vesync.com | #13,812 | Adobe Fonts, Adobe Fonts (Typekit), Let's Encrypt + 2 more | Find emails |
| unl.pt | #13,820 | — | Find emails |
| unipi.it | #13,824 | Apache, Bootstrap, Font Awesome + 4 more | Find emails |
| jabra.com | #13,836 | Azure Front Door, CSC (Digital Brand Services), DigiCert + 3 more | Find emails |
| le.ac.uk | #13,844 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN + 1 more | Find emails |
| lakesidesoftware.com | #13,854 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Trust Services + 4 more | Find emails |
| lafeltrinelli.it | #13,858 | Akamai edge/CDN, Akamai mPulse, Awin + 9 more | Find emails |
| simon.com | #13,860 | Azure API Management, CSC (Digital Brand Services), Fastly + 8 more | Find emails |
| abc7chicago.com | #13,873 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| maff.go.jp | #13,898 | Amazon CloudFront, Amazon S3, Azure DNS + 4 more | Find emails |
| crocs.com | #13,910 | Azure DNS, Cloudflare edge/CDN, DigiCert + 1 more | Find emails |
| 6sense.com | #13,932 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 2 more | Find emails |
| adt.com | #13,933 | AB Tasty, AddToAny, Affirm + 20 more | Find emails |
| stripes.com | #13,939 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 19 more | Find emails |
| nsc.org | #13,942 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 1 more | Find emails |
| nga.gov | #13,943 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN + 1 more | Find emails |
| kinepolis.fr | #13,979 | Akamai Edge DNS, DigiCert, Drupal + 7 more | Find emails |
| myweb3id.io | #13,984 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| ibge.gov.br | #13,987 | Cloudflare Bot Management, Cloudflare Turnstile, Cloudflare edge/CDN + 6 more | Find emails |
| lrt.lt | #13,988 | Chartbeat, Cloudflare, DoubleClick (Google Ads) + 4 more | Find emails |
| bsigroup.com | #13,994 | Azure API Management, CSC (Digital Brand Services), Cloudflare edge/CDN + 7 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 →