LINUX COMMANDS

nslookup [-option ... ] [host-to-find | -[server ] ]

TCP/IP command. Query Internet domain nameservers. nslookup is deprecated; its functionality is replaced by the dig and host
commands. nslookup may not be included in some distributions

all List the current settings

d2 Set exhaustive debug mode on

nod2 Set exhaustive debug mode off

debug Set debug mode on

nodebug Set debug mode off

defname Set domain-appending mode on

nodefname Set domain-appending mode off

domain=string Establish the appendable domain

ignoretc Set it to ignore packet truncation errors

noignoretc Set it to acknowledge packet truncation errors

host Inquires about the specified host. In this non-interactive command format, nslookup Does not prompt for additional commands.

- Causes nslookup to prompt for more information, such as host names, before sending one or more queries.

Examples:

 This command is often used to perform a reverse lookup on an IP address as shown in the below example.

$ nslookup 204.228.150.3
  Server: 198.60.22.2
  Address: 198.60.22.2#53