This crate exposes a struct called Looker that you need to instantiate like this:
use ;
let looker = new;
You can then use the looker variable to call the look_up method like this to get a IP result with Country, Region and City:
let ip = "12.22.104.13";
let result = looker.look_up;
match result
You can download the ip .csv file from here: https://cable.ayra.ch/ip/data/locationv4.gz
And then unzip it with:
gzip -d locationv4.gz
The file needs to have the .csv extension. If it doesn't have it after you unzip it, add it.