DNS (Domain name system) servers are one of the most crucial parts of hosting servers on the internet. DNS servers give us the ability to connect to websites and other types of servers by using words and number instead of IP addresses. Without DNS servers users visiting a website would have to connect using its IP address (say for example http://88.192.77.211 instead of http://www.unixmen.org). It can be somewhat hard for people to remember IPv4 addresses this becomes even more apparent with many web servers switching to IPv6. I don?t know many people that could easily remember a 32 digit address of each website they visit.