nslookup

nslookup is a network administration command-line tool available for many computer operating systems for querying the Domain Name System (DNS) to obtain domain name or IP address mapping or for any other specific DNS record.

Early in the development of BIND 9, the Internet Systems Consortium planned to deprecate nslookup in favor of host and dig. However, this decision was reversed in 2004 with the release of BIND 9.3,^[1] and nslookup has been fully supported since then.

Background

The name "nslookup" means "name server lookup". nslookup does not use the operating system's local Domain Name System resolver library to perform its queries, and thus may behave differently from dig (which does). Additionally, vendor-provided versions can confuse matters by using or including output of other sources of name information (such as host files, Network Information Service). Some behaviors of nslookup may be modified by the contents of resolv.conf.^[2]

Usage

nslookup operates in interactive or non-interactive mode. When used interactively by invoking it without arguments or when the first argument is - (minus sign) and the second argument is a hostname or Internet address of a name server, the user issues parameter configurations or requests when presented with the nslookup prompt (>). When no arguments are given, then the command queries the default server. The - (minus sign) invokes subcommands which are specified on the command line and should precede nslookup commands. In non-interactive mode, i.e. when the first argument is a name or Internet address of the host being searched, parameters and the query are specified as command line arguments in the invocation of the program. The non interactive mode searches the information for a specified host using the default name server.^[3]

References

↑ "BIND 9.3.0 is now available". Isc.org. 2004-09-23. Retrieved 2015-01-13.
↑ "DNS and BIND, Fourth Edition: Chapter 12. nslookup and dig". O'Reilly. Retrieved 20 July 2010.
↑ "pSeries and AIX Information Center". Publib.boulder.ibm.com. Retrieved 2012-09-05.

External links

Wikiversity has learning materials about Nslookup

Microsoft Windows
- nslookup – Microsoft TechNet library
- Using NSlookup.exe, Microsoft Knowledge Base
Unix-like OSs
- nslookup(1) – Linux User Commands Manual
Other
- DNS Web Tools at DMOZ (includes web-version of nslookup)

Unix command-line interface programs and shell builtins

File system	cat chmod chown chgrp cksum cmp cp dd du df file fsck fuser ln ls mkdir mount mv pax pwd rm rmdir split tee touch type umask

Processes	at bg chroot cron fg kill killall nice pgrep pkill ps pstree time top

User environment	clear env exit finger history logname mesg passwd su sudo uptime talk tput uname w wall who whoami write

Text processing	awk banner basename comm csplit cut diff dirname ed ex fmt fold head iconv join less more nl paste printf sed sort spell strings tail tr uniq vi wc xargs yes

Shell builtins	alias cd echo test unset wait

Networking	dig host ifconfig inetd netcat netstat nslookup ping rdate rlogin route ssh traceroute

Searching	find grep locate whatis whereis

Documentation	apropos help man

Miscellaneous	bc dc cal expr lp od sleep true and false

List of Unix commands

Windows command-line programs and shell builtins

COMMAND.COM Command Prompt Windows PowerShell Recovery Console

File system navigation	cd (chdir) dir popd pushd tree

File management	attrib cacls cipher compact copy del (erase) deltree expand icacls makecab md (mkdir) move rd (rmdir) recover ren (rename) replace rmdir robocopy xcopy

Disk management	chkdsk convert defrag diskcomp diskcopy diskpart fdisk format label subst scandisk sys vol vssadmin

Processes	exit kill powercfg runas sc shutdown start taskkill tasklist

Registry	assoc ftype reg regini regsvr32

User environment	date mode path set setx time title ver whoami

File contents	comp edit edlin fc find findstr print type

Scripting	choice clip cscript doskey echo for goto if more pause prompt rem

Networking	arp getmac hostname ipconfig net use netsh netstat nslookup PathPing ping route tracert

Maintenance and care	driverquery msiexec ntbackup sfc systeminfo w32tm WBAdmin winsat wmic

Boot management	bcdedit bootcfg fixboot fixmbr

Software development	debug exe2bin QBasic

Miscellaneous	cls help

List of DOS commands Environment variables

This article is issued from Wikipedia - version of the 9/24/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.

nslookup

Background

Usage

See also

References

External links