Search notes:

Shell command: dig

dig is a DNS lookup utility. 
dig renenyffenegger.ch
dig renenyffenegger.ch ANY
dig renenyffenegger.ch ANY +short
dig renenyffenegger.ch @8.8.8.8

See also

host -T ANY renenyffenegger.ch
host -T MX  renenyffenegger.ch
‥
Shell commands
~/.digrc

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