Dig - DNS Querying
Dig is a DNS lookup utility that can be useful for checking your DNS is answering queries correctly.
One can install the dig tool with the following command
sudo apt-get install dnsutils
If you want to query your current default DNS for a hostname, then simply enter the command below:
If you want to query a specific DNS, such as one you just set up, then one needs to specify it like below (substituting the IP):
dig my.domain.com @192.168.1.1
Alternatively, you can use a hostname for the nameserver, rather than the IP address, like below:
dig my.domain.com @ns1.mydomain.com
Below is an example of the ouput from such a query.
It may be important to know that the part with
;; Server: xxx.xxx.xxx.xxx is the IP address of the DNS server that responded. This is an easy way to figure out which DNS server you are using if you do not know.
First published: 16th August 2018