NAME¶nslookup - query Internet name servers interactively
nslookup [-option] [name | -] [server]
DESCRIPTION¶Nslookup is a program to query Internet domain name servers. Nslookup has two modes: interactive and non-interactive. Interactive mode allows the user to query name servers for information about various hosts and domains or to print a list of hosts in a domain. Non-interactive mode is used to print just the name and requested information for a host or domain.
ARGUMENTS¶Interactive mode is entered in the following cases:
Non-interactive mode is used when the name or Internet address of the host to be looked up is given as the first argument. The optional second argument specifies the host name or address of a name server.
Options can also be specified on the command line if they precede the arguments and are prefixed with a hyphen. For example, to change the default query type to host information, and the initial timeout to 10 seconds, type:
nslookup -query=hinfo -timeout=10
The -version option causes nslookup to print the version number and immediately exits.
INTERACTIVE COMMANDS¶host [server]
To look up a host not in the current domain, append a period to the name.
The class specifies the protocol group of the information.
(Default = IN; abbreviation = cl)
(Default = nodebug; abbreviation = [no]deb)
(Default = nod2)
(Default = search)
(Default = 53; abbreviation = po)
(Default = A; abbreviations = q, ty)
(Default = recurse; abbreviation = [no]rec)
(Default = novc)
(Default = nofail)
RETURN VALUES¶nslookup returns with an exit status of 1 if any query failed, and 0 otherwise.
SEE ALSO¶dig(1), host(1), named(8).
AUTHOR¶Internet Systems Consortium, Inc.
COPYRIGHT¶Copyright © 2004-2007, 2010, 2013-2019 Internet Systems Consortium, Inc. ("ISC")