Quote Originally Posted by EZorb View Post
admin>modules>zipship>edit For example it shows: Zone 2 Zip Codes
Comma separated list of five character zip codes that are part of Zone 2.
Set as 00000 to indicate all five character zip codes that are not specifically defined.

Then what is the 00000 used for and is it used?
Ah, that "commentary" was present in the original plugin so I don't know what the original author intended. Based on the code, I'm guessing that he had a list of zipcodes that were being used and it was easy to "remove" an unwanted code by setting the value to 0.

There is nothing in the code (other than that configuration comment) that special-cases the 00000 case.