Domain Checker
Check if a domain is connected to a Microsoft 365 tenant
About this tool
The Domain Checker tool helps you quickly verify if a domain is connected to a Microsoft 365 tenant. This can be useful for:
- Administrators setting up new tenants
- Consultants verifying domain availability
- IT professionals troubleshooting domain issues
Note: For demonstration purposes, this tool simulates API responses. Domains like microsoft.com, outlook.com, github.com, and domains ending with .onmicrosoft.com will show as connected.