Like showed in given example, there are 4 DNS servers involved in a loading of a webpage. Once end user gives webpage address to a browser '''DNS recursor''' receive query and start giving request to others DNS servers to bring back webpage. A '''root server''' is responsible for looking a specific name server and last portion of a host name (in this example “com”). A '''name server''' is responsible to provide a DNS address for a '''DNS recursor''', once request from it was made. Once '''website server''' gets command from '''DNS recursor''' it translate human readable host name to a machine understandable IP address and it bring back to machine.