What is a nameserver and what is it for?

In simple terms, we could describe a nameserver as a domain address book. Just like you would use an address book to look up information related to a particular person or company by name, the same goes for domains, since they also have an “address”. When you type our address mydataknox.com in your Internet browser, your computer uses DNS to retrieve the data about the nameserver containing the IP addresses linked to our domain. Afterwards, your computer requests the IP address of our web server, which, finally, sends the web page to your browser.