This article will help you to set up DNS (Domain Name System) on Linux/Unix-based systems.
DNS is mainly used to resolve host-names, which means it can easily bind IP addresses into a fully qualified domain name (FQDN) like www.linuxteck.com or www.google.com to IP addresses like 166.62.27.62 / 172.217.166.110. It is one of the basements of the internet.
When you look for a domain name in a browser, it sends a question over the net to take a look at the domain with its corresponding IP address. Once identified, it uses the IP address to retrieve the website’s information. This whole technique takes just milliseconds. DNS terms are used by many names, like name servers, domain name systems and nameservers.