use strict;
use warnings;

my $HN = 'fred';

while (<DATA>) {
    next if ! /^((?:\d{1,3}\.){3}\d{1,3})\s+(\S*)/;
    next if $HN ne $2;
    print "$1\n";
    print "$2\n";
}

__DATA__
0.0.0.22    fred localhost
0.0.63.23    fred-test-0
1.0.128.24    fred-test-1

##</code><code>##

0.0.0.22
fred