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 |
|---|---|---|---|
| 1800contacts.com | #39,846 | Amazon Route 53, Fastly, PerimeterX (HUMAN) + 1 more | Find emails |
| dogstrust.org.uk | #39,850 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 4 more | Find emails |
| nhsbsa.nhs.uk | #39,853 | Amazon CloudFront, Amazon S3, Civic Cookie Control + 10 more | Find emails |
| #30 (Tranco) |
| Find emails |
| 5 | microsoftonline.com | #38 (Tranco) | Find emails |
| eurasianet.org | #39,863 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| tipico.com | #39,869 | Akamai Edge DNS, DigiCert | Find emails |
| diynetwork.com | #39,881 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| cybozu.co.jp | #39,884 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| iltempo.it | #39,886 | AddThis, Amazon CloudFront, Cloudflare edge/CDN + 11 more | Find emails |
| chl.ca | #39,904 | Amazon Route 53, Bootstrap, Cloudflare Bot Management + 14 more | Find emails |
| only.com | #39,912 | CookieYes, Fastly, Google Cloud DNS + 3 more | Find emails |
| uquebec.ca | #39,919 | Apache, DigiCert, Drupal + 4 more | Find emails |
| americanscientist.org | #39,925 | Let's Encrypt, Nginx | Find emails |
| allabolag.se | #39,926 | Adnami, Amazon (ACM), Amazon CloudFront + 6 more | Find emails |
| tradepending.com | #39,933 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| thenewamerican.com | #39,937 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| lumens.com | #39,942 | Amazon Route 53, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| pepperstone.com | #39,954 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| intelligentgolf.co.uk | #39,955 | Font Awesome, Google Cloud, Google Fonts + 7 more | Find emails |
| leatherman.com | #39,990 | Azure DNS, Cloudflare edge/CDN, Let's Encrypt + 5 more | Find emails |
| microgaming.co.uk | #39,991 | Amazon (ACM), Amazon CloudFront, Google Fonts + 2 more | Find emails |
| du.ae | #40,007 | Apache, Citrix NetScaler, DigiCert + 3 more | Find emails |
| ht.hr | #40,012 | ASP.NET, Apache, DigiCert + 3 more | Find emails |
| pima.gov | #40,020 | Azure API Management, Cloudflare edge/CDN, Google Tag Manager + 1 more | Find emails |
| gcorelabs.com | #40,030 | DigiCert, Google Tag Manager, Nginx + 1 more | Find emails |
| yesmagazine.org | #40,034 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 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 →