Step 1: Sign into https://portal.azure.com or http://portal.office.com/ and click on Admin.
Step 2: Navigate to Azure Active Directory.
Step 3: In the Azure Active Directory admin center, click on Azure Active Directory on the left pane.
Step 4: Scroll down and click on Licenses and go to All products.
Step 5: List of all the licenses and the number of total, assigned and available licenses will be displayed.