There is no such postal code.
Or were you giving an example? I need more coffee.
There is a space between the first three keystrokes and the last three.
Make sure you are hitting 0 and not O.
If you are in a new development, it is possible that your postal code is not yet indexed. That's pretty common. Use the postal code for your local municipal buildings (town hall). Because your postie can read the street address, the incorrect code will not slow things down by much.