Dns switch how long

This article will provide you some background information on DNS and what to expect when changing your name servers.

Propagation is the projected length of time it takes a domain's DNS Domain Name System information to be updated across the entire web after a change is made. The process can take hours to complete in full. Because of propagation, not all visitors will be directed to your new name servers on your new hosting account; some visitors will continue to be directed to your old name servers on your old hosting account until propagation is complete. How quickly visitors are directed to the new name servers depends on their physical location, internet service provider, and luck; it is not something HostGator has control over.

Once propagation is complete, your site will appear on our server, and your email will be fully functional. There is no definitive way to tell when propagation is complete. During the first 48 hours, even if you can see your site on the new server, your next-door neighbor might still be visiting the site on the old server. There are also ways for you to see the propagation progress using the websites below. The routing of all communication between computers on the internet is handled by IP addresses rather than domain names.

The following example should help you to visualize the process. A DNS change requires up to 72 hours to propagate worldwide, although most often this happens in a matter of hours. Flushing your own local DNS cache can help speed up the process. More information on how to flush your local cache based on the OS you are using can be found in the articles below:. What is DNS propagation and why does it take so long?

Changes to the DNS records or name servers of your domain. There is no primary or secondary in the sense you think, you set a primary and secondary in the client, but the client uses whichever one first replies and will remain with it until it can't use it or until the DNS cache is flushed. I was at a clients place and noticed that it took forever to get to any website, about 30 seconds for each site. When I looked at their router settings, the DNS1 was I changed the DNS1 to 8.

The Based on what you said, that's what was happening to my client. Actually it was a potential client, I went there to give them an idea of what they needed and they mentioned that there was this issue browsing the web. Once I fixed it, they decided they could wait for the other stuff. I never got a call. After that, get them to agree to a contract before doing any work. You could have also removed the gateway IP of We didn't want to put everything on one provider for just that reason. Google DNS like many other large providers use Anycast, so the chances of it going down are slim, very slim.

You are always directed to the closest host, with lowest latencies, lowest hops etc. You should not mix providers either, for a start Google is pure DNS, not filtered and OpenDNS does some filtering, so every now and then you'll also have sites that work sporadically, because the client has fixed to a different DNS provider.

Either way though, this is derailing a little and not answering the OPs question, which is in itself, not directly answerable due to how DNS and clients work. I don't think you ever got the answer you were looking for. Can I suggest in future being more specific and providing more information. So I will assume you have Windows clients and you really want to know how long before windows will change to the secondary DNS server setting.

Win7 and below do it differently to win Only ever set AD DNS servers on domain joined clients - do not be tempted to set a router etc as the alternate.