I'm not sure if this is what you want:
Get-AzureADDomain | FL
This will show the domain status of your tenant.
Before that you should install the AAD module:
Install-Module AzureAD
For more information: https://learn.microsoft.com/en-us/powershell/module/azuread/?view=azureadps-2.0#domains
Best regards,
Lou
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