Us Zip Plus 4 Generator?

US zip plus 4 generator for CS Cart?

Purpose to speed up deliveries

Does CS cart have one?

If not does anyone know how to make one?

Note the US post office has one on their site

https://tools.usps.com/go/ZipLookupAction_input

It looks like this is not available for CS Cart now...

Feel free to contact us if you want to integrate this feature to your website