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Using nslookup command

This is a network administration tool for querying the DNS to obtain the domain name or IP address mapping or any other specific DNS record. It can be used in non-interactive mode as well as in interactive mode in CLI by a user.

Following are the examples to illustrate the usage of nslookup command:

The usage of nslookup command to find the IP address of domain name is shown here:

$ nslookup www.centos.org

The usage of nslookup command to find the authoritative nameserver of a domain is shown here:

$ nslookup -type=ns centos.org

The nslookup command can be used to make a non-authoritative query of an MX record from a DNS server specified in /etc/resolv.conf file is shown here:

$ nslookup -query=mx centos.org

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