Currently you don't. It is a module in the App:: namespace. If you want to use the infrastructure generated by geoip steal the code from geoip or use it's json output in a pipe:

use JSON::MaybeXS;
open my $gh, "-|", "geoip", "--json", $url_or_hostname or die;
my $data = decode_json (do { local $/; <$gh> });
say $data->[0]{provider}; # [0] as it returns a list of matches
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As with the other post today, in a piped open, close needs to be checked for errors as well. Or, let me just plug my relatively new module IPC::Run3::Shell::CLIWrapper ;-)

use JSON::PP qw/decode_json/;
use IPC::Run3::Shell::CLIWrapper;

my $geoip = IPC::Run3::Shell::CLIWrapper->new( { fail_on_stderr=>1,
    stdout_filter => sub {$_=decode_json($_)} }, qw/ geoip --json
    --DB=dbi:SQLite:dbname=geoipdb / );

my $data = $geoip->('209.197.123.153');
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