Method 1
Log on to the CADT console.
In the upper-right corner, click your profile picture. Your account ID appears in the dropdown. Verify that the account type is Alibaba Cloud account.
Method 2
Use this method if you are logged in with an Alibaba Cloud account.
Log on to the CADT console.
In the upper-right corner, click your profile picture to open Account Center, then click the Overview tab.
In the My Account section, find the account ID field.