Manual Reference Pages - DNSNAME (1)
dnsname - does a reverse lookup for the IP address
dnsname does a reverse lookup for the IP address
a.b.c.d. It prints the first domain name for that address.
If no domain names are listed in DNS,
dnsname prints a blank line.
You can list several IP addresses;
dnsname prints each result on a separate line.
There is also a
that reads IP addresses from its input
and performs many reverse lookups in parallel.
dnsname exits 0.
dnsname encounters a temporary problem
that prevents it from determining the domain name,
it prints an error message and exits 111.
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