hostコマンドを使う。 $ host www.yahoo.co.jp www.yahoo.co.jp is an alias for edge12.g.yimg.jp. edge12.g.yimg.jp has address 182.22.28.252 $ host www.google.co.jp www.google.co.jp has address 142.250.207.3 www.google.co.jp has IPv6 address 2…