We recently had a Governance case where we found some flows doing some connections to other Tenants, we had a list of the Tenant IDs that we needed to know the name of just to get an understanding of what was being done.
If you want to get a Tenant Name from the Tenant ID there’s a graph API endpoint that’ll help you with that, the tenantInformation.
What if you need some quicker way without having to deal with calling that endpoint? Here’s a quick workaround:
Go to Azure Portal, search for External Identities.
Select Cross-tenant Access Settings and then Organizational Settings.
From here just select Add Organization and past the ID on the search box, it’ll do a lookup and give you the Tenant Name:
When done just press Discard.
Nice and easy!