Welcome to the Community!
In order to check the ADSL/NBN static IP address, our customers need to login via "My Account: https://www.tpg.com.au/home/myaccount", then needs to look for NBN/ADSL Account Management, click on NBN/ADSL Settings.
The information that you seek will be displayed.
I would also like to verify the static config details for our NBN connection. I do not have a TPG account as the internet product is billed through AAPT, thus can not log in to check.
Is there another way I can verify the details? The details I have are not permitting connection to NBN, despite long tech support with my router supplier