How To Switch WebHosts With Zero Downtime

First, say nothing about switching to your old host. Then, go find a new one.

Second, sign up with your new host, and ftp your website up. Some hosts (like Hostgator) will help you transfer your website free of charge (including mySQL databases), but of course, you will need to give them access to your old host’s account. Still, say nothing to your old host.

Third step, is to change your domain name’s DNS from your old host’s to the new host’s.

Examples of DNS:
ns123.yourhostname.com
ns223.yourhostname.com

At this point is where I’ll say that you absolutely need to sign up for a domain name that is separate from the company you signed up webhosting with. Go for or NameCheap.com

Fourth, is to wait 48 hours after you have made changes to your DNS settings. That’s the time needed for your domain name to propagate or “update” the domain-to-host relationship (lay terms, of course). It may take less than that though, but to play it safe, give it 48 hours.

Ok, you’re done! You may talk to your old host now. Email them to cancel or something.