Discover Entra ID Tenant ID

How to discover an Entra ID Tenant ID

Overview

This is a public endpoint for required functionality

• We can check a particular Microsoft URL to determine an Entra ID Tenant ID (assuming the domain is associated with Entra / Microsoft 365)

View in a Web Browser

View with curl

curl -s 'https://login.microsoftonline.com/<domain-url>/.well-known/openid-configuration' \
| jq -r '.token_endpoint | split("/") | .[3]'

View with PowerShell

Documentationaadinternals.com

brew install powershell

pwsh
Install-Module -Name AADInternals
Import-Module -Name AADInternals
Get-AADIntTenantID -Domain <domain-url>