There are some cases.
The Standard shipping does not provide full tracking information, particularly for Australia, UK, UAE, Italy, Qatar, Peru and so on.
But Australia Post let you know where your package is via their twitter. https://twitter.com/auspost
Please ask Australia Post about your package via Twitter.
Sometimes tracking information is updated belatedly than the actual state.
Please allow some time for update of tracking information
Delivery could be delayed due to bad weather.
None of them?
If you let me know your order number, we'll ask Korea Post to track your package officially.