nslookup Man page

Resume Wikipedia de Nslookup

nslookup est un programme informatique de recherche d’information dans le Domain Name System (DNS), qui associe nom de domaine et adresses IP. nslookup permet donc d’interroger les serveurs DNS pour obtenir les informations définies pour un domaine déterminé.
Il n’est plus maintenu pour UNIX et il est recommandé d’utiliser dig ou host à la place. Néanmoins cette commande est toujours d’actualité sous Windows.

NSLOOKUP(1) BIND9 NSLOOKUP(1)

NAME

nslookup – query Internet name servers interactively

SYNOPSIS

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:

1. when no arguments are given (the default name server will be used)

2. when 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

The -version option causes nslookup to print the version number and
immediately exits.

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 type 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)

ndots=number
Set the number of dots (label separators) in a domain that
will disable searching. Absolute names always stop
searching.

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)

[no]fail
Try the next nameserver if a nameserver responds with
SERVFAIL or a referral (nofail) or terminate query (fail)
on such a response.

(Default = nofail)

FILES
/etc/resolv.conf

SEE ALSO

dig, host, named(8).

AUTHOR

Andrew Cherenson

COPRYRIGHT

Copyright © 2004-2007, 2010, 2013, 2014 Internet Systems Consortium,
Inc. (“ISC”)

BIND9 January 24, 2014 NSLOOKUP(1)

Ils en parlent aussi

is dead, long live dig and host – the smalley creative blog
8 Linux Nslookup Commands to Troubleshoot DNS – Tecmint
How to install dig, , host commands in Linux – CryBit
Bohemian Blog » Blog Archive » Find IP Address of a Website in …
Nslookup – Common Usage Examples – The Sysadmins