: Minimising downtime when transferring domain name and DNS records My company's domain name (a .com) was registered with Demon Internet years ago. I use their nameservers so they provide my DNS.

@Hamaas447

You're on the right track, you should be able to avoid downtime all together - DNS management without a control panel, sounds like a nightmare!

When you say 'domain transfer' I'm assuming you're talking about moving the domain from one registrar to another. In theory it doesn't matter if this is done before or after the name servers are re-delegated - this shouldn't affect your process unless your new registrar is also your DNS provider and requires you to have the domain with them in order to have DNS services managed by them.

Here's how I would do it:


Get a copy of a all DNS records from current provider

Create said DNS records on new provider.
Test all the DNS records - you can do this by editing your machines hosts file (sudo nano /etc/hosts* on OS X) and pointing it to the new server, these tests will obviously only work on your machine but should give you enough certainty to proceed.

For reference, a hosts entry would look like this: (127.0.0.1 mydomain.com)


After doing this, you should be able to ping your domain name to verify it's going to where you've pointed it to in your hosts file, you can also test DNS records in your browser.

Be sure to remove the entry you added from your hosts file, after you've verified your DNS records on the new provider are working correctly - otherwise you'll be getting false results on the next step.

Re-delegate name servers to new provider, depending on the domain registry this can take some time, I find .com.au domains can be resolving to the new name servers in a few hours, but .com's can take up to 7 days. The general rule is 24-48 hours for resolution.

After a period of time has passed (varies depending on registry, etc) you can check and see if your domain is resolving to your new server - you'll usually need to clear your computers DNS cache, and sometimes browser cache to see the changes. On a mac, open up terminal and type dscacheutil -flushcache - this will flush your DNS cache. You can thing ping the domain and see if it's resolving, if not, repeat process with added time waiting for resolution.

If you have previously accessed the page in a browser, you will need to clear your browser cache to see the change as well as clearing your O/S DNS cache.

Keep in mind, just because it's resolving for you, does not mean it's resolving everywhere - so try and keep both services active for a significant period of time to take care of any stragglers.

After the DNS is re-delegated and everything is working nicely, transfer the domain to the new registrar, this should not affect your DNS at all. This step could be done here, or at step 2 - depending on your new providers setup.

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@Miguel251

This is how I would solve this problem:

1) Obtain a list of all DNS records from Demon for the domain

2) Re-create the same DNS records on the new registrar's control panel

3) Change domain DNS to match the new name servers

When the DNS settings will be changed, it sould work instantly if the new name servers settings are good.

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@Pierce454

With DNS, you can avoid most downtime; as long as you plan it correctly. You just need to do the following:


Copy all the DNS information from Denon to your new DNS servers (all your CNAME, MX, A, PTR... records.)
Test that these new DNS servers are working correctly (perform manual nslookup requests)
Tell Denon to change your DNS info to your new DNS servers, and let it propagate for a while.
Perform the domain transfer.


Since it's either Denon telling a requester that your DNS servers are somewhere else, or your new Registrar, you're always pointing to the right servers. Even, if a machine's DNS info is so outdated, it will worse case, still point to the correct IP's just provided by a different DNS server.

They'll, if you follow the steps right, always point people in the right direction, whoever answers.

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