Understanding Domain Name Servers (DNS) We assume that you familiar with the binary language your computer understands, to your computer, everything is a number i.e. 0 & 1 all the programing and computation a computer does resolves around the combination of these two numbers in binary mode. As we know computers are much better at processing numbers than anything else. Unfortunately, being humans we aren't quite as good in numbers as computers are and we prefer words. We understand words better than computers and bridge that gap between human and computers we need some kind of system that understand our language and translates it into computer language. When it comes to website addresses, DNS helps bridge that gap. On internet we have assigned each computer a unique number, a number that help identified the computer, in internet language it is called an IP address. When you visit a website you enter its name know as domain name to connect to that computer where it resides. In actual you are connecting to the IP address of the website's server and you are receiving information about that website from that server. More specifically, your computer needs to know the IP address of that server where your website is hosted so that it will know where your website is, to connect you and server Domain Name Server (DNS) plays a major role. DNS stands for Domain Name Server and is a collection of servers that act like a phone book, storing an extra ordinarily long list of domain names and their corresponding IP addresses, When you type "www.domainexpress.co.uk" into your web browser, it connects first to your Internet Service Provider's DNS server and asks it for the IP address that corresponds to the domain name "domainexpress.co.uk". If everything goes well, the DNS server replies with the IP address (the number of the computer) and your web browser will then communicate with the Domain Express web servers and you will be able to exchange information, view website and connect to the database of the website. It is likely the same way when you need to call your friend from your phone you just type the name of your friend and your mobile phones get the number of your friend for you. You do not have to remember the number a name will work for you and your mobile phone will do the rest. Simply when you type the name of your website in the browser your computer match it with its respective IP address and fetch the information associated with it for you. Your phone book is not frequently updated it is updated only when you need to edit/add a friendâ€™s number, while a Domain Name Server (DNS) is updated every 24-72 hours so that the information is upto-date and not even a single newly domain name is missed. Now you know when you register a new domain name your registrar ask you to wait for 72 hours before the domain names get resolved it is actually the wait for the DNS to be updated and your newly register domain will be live and made public to be accessible to everyone.