Choose the server with the lowest latency
sudo netselect host_1 host_2 ...Display nameserver resolution and statistics
sudo netselect -vv host_1 host_2 ...Define maximum TTL (time to live)
sudo netselect -m 10 host_1 host_2 ...Print `n` fastest servers among the hosts
sudo netselect -s n host_1 host_2 host_3 ...