While activating O365 E3 license using the Volume Licensing Service Center, I had trouble to create an Organizational Account.
Since I tried several times, our domain name become not available.
How to verify our domain name is belonging to whom right now ?
I'm sure that it was saved to my wrong subscriptions, so how can I get it available again ?
Thanks funkhu, I called Microsoft VL support and they advised a work-around by pretending to buy the same Plan from the Store and getting the option to Register an account via the Store.