Changing To New Host? No More Worries! - Only a few...
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Only a few more steps more and you will be completely done. Before transferring your DNS servers over from your previous host to your new one, debug and test the new site from an individual IP number. Check that all the web pages exist, the links point to the right pages and that all your scripts are running. One important point which people always forget is their domain name expiration date. If you plan to move near the expiration date, it could cause you lots of problems. To be on the safe side, make sure that you have at least 3-4 weeks in hand before the domain name expires, or just renew it for another year.
To transfer domain name service to a new host identify registrar using "WHOis" lookup http://domreg-m6.net/domains/WHois.asp, verify registration of your domain name, identify the name server information for the host your are transferring to, and make changes in the DNS information at the registrar. During this DNS transition period new DNS information has to be propagated throughout the world's DNS servers. This propagation might take 2-4 days as an International root name server will firstly have to check all the various Domain registrars for updates, and then every ISP provider will update their DNS setting to show the new changes. Not only this, even Internet, i.e. Internet routers and caching engines have to update/clear its DNS cache as well. During this propagation period, you keep your old site running so that the visitors whose ISP provider haven't updated can still visit your website.
It's advisable that you don't cancel your old hosting service during the transition period, as you will need to check your mail from both the hosting providers, as some will direct e-mail to your old server whereas other Internet regions will send mail to your new server. After one or two weeks you can annul the account with your old host.
On the very first notion it sounds like a painful task to find a new web host and make all the necessary changes, but with the steps known, people like John will not find this procedure problematic.
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