If you are a Linux user, you have a great built-in network diagnostic tool – the Dig command. It is a simple software that you can use through the Terminal. It serves various network diagnostics.

​Purpose of the Dig command.

Dig command is a DNS utility that is available on Linux. The purpose of the Dig command is to be able to get information about your domain quickly. You can probe different DNS record types, see if the DNS propagation has ended, and check the parameters of a particular DNS record. You can also see which are the name servers that are authoritative for a domain and see if they respond correctly.