Your AdWords account number or customer ID is a unique number used to identify your AdWords account. It's used to link your account with ClickGUARD in order to protect it.

Where do I find my account number?

If you're using the old AdWords UI:

Sign in to your AdWords account
Look in the top right corner
Copy “Customer ID” from above your email address.

Old AdWords

If you're using the new AdWords UI:

Sign in to your AdWords account
Look in the top left corner
Copy “Customer ID” from underneath the AdWords logo

New AdWords