2022
https://www.unixmen.com/the-dig-command-an-introduction-to-linux-digging/
2021
https://www.tecmint.com/dig-command-examples/
https://www.cyberciti.biz/faq/linux-unix-dig-command-examples-usage-syntax/
EF - Linux Made Simple - The DIG Utility or 6:51
    https://www.youtube.com/watch?v=ycRM1dR6mLU

sample
# via google
dig @8.8.8.8 +short <host>
<res.ip>