How to edit Windows Hosts file IP addresses

Windows Hosts [WinHosts] file contain mapping of IP addresses for specific domain URLs (For example: localhost). You can edit to add or remove specific IP address and respective domain URLs on Windows computer throught WinHosts file. Such IP address editing has lot of uses like

How to resolve IP address of a host & vice-versa?

Want to know IP address of or or do you want to know the host name domain of a specific IP address? In either case free utility 'FastResolver' should be handy big time. It resolves multiple host names into IP addresses and vice versa. You can simply type the list of