Thin wrapper of dog for easy reverse lookup.
It performs reverse lookup if the single argument is IPv4 or IPv6 address.
Pass arguments to dog as is otherwise.
$ dogr 1.1.1.1
PTR 1.1.1.1.in-addr.arpa. 18m53s "one.one.one.one."
$ dogr 2620:0:2d0:200::7
PTR 7.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.d.2.0.0.0.0.0.0.2.6.2.ip6.arpa. 5h49m06s "www.icann.org."
$ dogr example.net @1.1.1.1
A example.net. 23h55m07s 93.184.216.34