nslookup(1M)						  System Administration Commands					      nslookup(1M)

NAME

       nslookup - query Internet name servers interactively

SYNOPSIS

       nslookup [-option] [name | -] [server]

DESCRIPTION

       The  nslookup  utility  is  a program to query Internet domain name servers. It 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.

PARAMETERS

       Interactive mode is entered in the following cases:

	   1.	  No arguments are given (the default name server is used).

	   2.	  The first argument is a hyphen (-) and the second argument is the host name or Internet address of a name server.

       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

INTERACTIVE COMMANDS

       host  [server]

	   Look  up  information  for  host using the current default server or using server, if specified. If host is an Internet address and the
	   query type is A or PTR, the name of the host is returned. If host is a name and does not have a trailing period,  the  search  list	is
	   used to qualify the name.  To look up a host not in the current domain, append a period to the name.

       server domain
       lserver domain

	   Change the default server to domain; lserver uses the initial server to look up information about domain, while server uses the current
	   default server. If an authoritative answer can't be found, the names of servers that might have the answer are returned.

       root

	   Not implemented.

       finger

	   Not implemented.

       ls

	   Not implemented.

       view

	   Not implemented.

       help

	   Not implemented.

       ?

	   Not implemented.

       exit

	   Exits the program.

       set keyword[=value]

	   This command is used to change state information that affects the lookups. Valid keywords are:

	   all

	       Prints the current values of the frequently used options to set. Information about the current default  server  and  host  is  also
	       printed.

	   class=value

	       Change the query class to one of:

	       IN

		   the Internet class

	       CH

		   the Chaos class

	       HS

		   the Hesiod class

	       ANY

		   wildcard

	       The class specifies the protocol group of the information.

	       (Default = IN; abbreviation = cl)

	   [no]debug

	       Turn on or off the display of the full response packet and any intermediate response packets when searching.

	       (Default = nodebug; abbreviation = [no]deb)

	   [no]d2

	       Turn debugging mode on or off. This displays more about what nslookup is doing.

	       (Default = nod2)

	   domain=name

	       Sets the search list to name.

	   [no]search

	       If  the	lookup	request contains at least one period but doesn't end with a trailing period, append the domain names in the domain
	       search list to the request until an answer is received.

	       (Default = search)

	   port=value

	       Change the default TCP/UDP name server port to value.

	       (Default = 53; abbreviation = po)

	   querytype=value
	   type=value

	       Change the top of the information query.

	       (Default = A; abbreviations = q, ty)

	   [no]recurse

	       Tell the name server to query other servers if it does not have the information.  (Default = recurse; abbreviation = [no]rec)

	   retry=number

	       Set the number of retries to number.

	   timeout=number

	       Change the initial timeout interval for waiting for a reply to number seconds.

	   [no]vc

	       Always use a virtual circuit when sending requests to the server.

	       (Default = novc)

FILES

       /etc/resolv.conf

	   resolver configuration file

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWbind			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dig(1M), host(1M), named(1M), attributes(5)

NOTES

       nslookup and dig(1M) now report "Not Implemented" as NOTIMP rather than NOTIMPL. This will have impact on  scripts  that  are  looking  for
       NOTIMPL.

       BIND 9 nslookup is deprecated and not as full featured as its former BIND 8 version. For more features and functionality refer to dig(1M).

SunOS 5.11							    24 Dec 2008 						      nslookup(1M)