Reverse nslookup Command

Posted on in Categories , last updated December 3, 2010

How do I use nslookup command line administrative tool for testing and troubleshooting DNS servers including reverse lookup under UNIX or Windows operating systems? How do I look up an IP address of a domain or host on a network using nslookup command?

nslookup is a UNIX or Windows (nslookup.exe)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.

UNIX Example

To find out an IP address of cyberciti.biz, enter:
$ nslookup cyberciti.biz
Sample outputs:

Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
Name:	cyberciti.biz
Address: 75.126.153.206

You can run reverse ip lookup as follows:
$ nslookup 75.126.153.206
Sample outputs:

Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
206.153.126.75.in-addr.arpa	name = www.cyberciti.biz.

Authoritative answers can be found from:
153.126.75.in-addr.arpa	nameserver = ns2.arpa.global-datacenter.com.
153.126.75.in-addr.arpa	nameserver = ns1.arpa.global-datacenter.com.
ns1.arpa.global-datacenter.com	internet address = 67.228.254.20
ns2.arpa.global-datacenter.com	internet address = 67.228.255.20
ns2.arpa.global-datacenter.com	has AAAA address 2607:f0d0:0:15:2000::1

MS-Windows Example

To perform a reverse lookup on an IP address 75.126.153.206, enter (open MS-DOS prompt by clicking on Start > Run > Type > Cmd.exe):
nslookup 75.126.153.206

Server: localhost
Address: 127.0.0.1

Name: www.cyberciti.biz
Address: 75.126.153.206

Sample session:

Fig.01: A reverse lookup on an IP address using nslookup.exe
Fig.01: A reverse lookup on an IP address using nslookup.exe

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

8 comment

  1. Looks cool, but…

    If you`re using reverse IP you also want to show all records, not just the first one.
    You cant list all websites using lookup ip.

    It’s a problem of options set or a lack of nslookup tool?
    Can i list all websites on a ip with nslookup?

    Regards.

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