One of the things I find myself doing from time to time it to execute the whois command. This allows me to figure out to whom an IP(range) or domain belongs. However, when doing this on OS X, especially with IPv6 addresses I’m greeted with: $ whois 2a00:1450:400f:805::200e No match for "2a00:1450:400f:805::200e". >>> Last update of whois database: Tue, 07 Jun 2016 12:55:53 GMT <<< I figured I should explicitly ask it to treat this as IPv6 and found this in the man page:
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