Basic Usage of nslookup Command in Windows

Nslookup.exe or nslookup is a network administratiom command-line administrative tool for testing, dignosis and troubleshoot DNS servers issue. To use nslookup in Windows operating system, TCP/IP protocol must be installed and at least one DNS server has been configured. Nslookup command can be run in two modes, interactive and noninteractive mode. Example 1 show that nslookup was execute on noninteractive mode as below syntax :

nslookup [-option] [hostname] [server]

Example 2 and Example 3 was execute in interactive mode, simply type “nslookup” at the command prompt as below :

Example 1 – Use nslookup command to get ip addresses of the website:


C:\>nslookup google.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
Name:    google.com
Addresses:  74.125.128.100, 74.125.128.139, 74.125.128.113, 74.125.128.138
          74.125.128.101, 74.125.128.102


C:\>

Example 2 – Use nslookup command to get name servers of the websites :

C:\>nslookup
Default Server:  google-public-dns-a.google.com
Address:  8.8.8.8

> set type=ns
> bloggerbaru.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
bloggerbaru.com nameserver = ns2939.hostgator.com
bloggerbaru.com nameserver = ns2940.hostgator.com
>

Example 3 – Use nslookup to get mx record of the websites :

C:\>nslookup
Default Server:  google-public-dns-a.google.com
Address:  8.8.8.8

> set type=mx
> bloggerbaru.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
bloggerbaru.com MX preference = 0, mail exchanger = bloggerbaru.com
> bloggermy.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
bloggermy.com   MX preference = 10, mail exchanger = ASPMX3.GOOGLEMAIL.com
bloggermy.com   MX preference = 1, mail exchanger = ASPMX.L.GOOGLE.com
bloggermy.com   MX preference = 5, mail exchanger = ALT1.ASPMX.L.GOOGLE.com
bloggermy.com   MX preference = 5, mail exchanger = ALT2.ASPMX.L.GOOGLE.com
bloggermy.com   MX preference = 10, mail exchanger = ASPMX2.GOOGLEMAIL.com
>

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