Tenant lookup tool - gmail.com and yahoo.com domains

Jaksa Damjanovic 46 Reputation points
2023-07-20T08:12:31.41+00:00

Hi team,

We are using Tenant Lookup tool at https://aka.ms/wheres-my-tenant for checking tenant details (if our guest users have their own tenant or not) and we noticed that even 'gmail.com' and 'yahoo.com' domains return tenant ID '9cd80435-793b-4f48-844b-6b3f37d1c1f3'. Please could you share some light on this tenant ID and how it is related to 'gmail.com' and 'yahoo.com' domains. Thanks!

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Marilee Turscak-MSFT 37,141 Reputation points Microsoft Employee
    2023-07-21T01:25:35.2733333+00:00

    Hi @Jaksa Damjanovic ,

    Based on what I could find, your observation is correct that the tenant id "9cd80435-793b-4f48-844b-6b3f37d1c1f3" gets returned for personal email addresses or consumer Microsoft tenants (gmail.com, outlook.com, etc). This is referenced in the scripts here and here. The first script return TenantName = 'Personal Email Addresses' when that ID appears. It seems that personal email addresses, officeapps.live.com , and MSA Realm tenants would resolve to that ID.

    if ($_.Name -eq '9cd80435-793b-4f48-844b-6b3f37d1c1f3') {
                                                    $TenantName = 'Personal Email Addresses'
    

    The ID would get returned when customers sign up using their Microsoft accounts. I was unable to find a detailed description of the history of this tenant, but I reached out to the product team to see if they could provide more details and will edit this post if they are able to offer additional documentation. The domain itself is provided by Microsoft. Another user made a similar observation in the Github issue here , and I have surfaced this discussion with the engineering team.

    If the information was relevant to you, please Accept the answer. This will help us and improve discoverability for others in the community who may be researching similar questions.

    1 person found this answer helpful.

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