What is Hosts File?
The hosts file is used to map hostnames (in other words domains) to IP addresses.
Using a hosts file, you can change the IP address that you resolve a given domain name to.
When you transfer a working website to us, you can check how it resolves from our server before updating the DNS in order to make sure there will be no service disruptions.
Windows 7
Windows 10
MAC OS
Once you have confirmed on the accessibility of the website upon changing the host file, you may then point the domain nameserver/ A record to us.