: Question about name server propagation I just did an overhaul of my company's website and changed the hosting provider, and it's probably been about 36-48 hours since I changed the pointers at
I just did an overhaul of my company's website and changed the hosting provider, and it's probably been about 36-48 hours since I changed the pointers at my registrar to the new name servers. I have noticed some very strange behavior at my office, where we have a Windows Server domain-based LAN-- in particular, with two computers sitting next to one another, one pulls up the new site and the other does not--after repeatedly clearing the cache, resetting/flushing via ipconfig, trying different browsers, etc.--which is baffling to me. I was testing the site on someone's phone, and pulling up the site via the in-house wi-fi connection brought up the old version, while switching to his phone's LTE data connection pulled up the new one.
What exactly is going on here? Clearly those computers pulling up the old version of the site are referencing the old DNS pointers that link to the old hosting provider, but how could this vary from machine to machine on the same network?
Thanks for any clarification here.
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If you were using Chrome browser, then you should know that Chrome uses Google's DNS.
Also, switching to LTE data connection on your phone you switch to another DNS supplied by your carrier. If you have Google Bandwidth saving feature enabled, that would also make you use Google Proxy server's and probably their DNS (to an extent).
You also mention clearing the cache, but it's not very clear where did you clear it. There might be cache on your routers, then there is also DNS cache on clients (browser and/or OS-level).
It all comes down to one thing: DNS servers update at different times and this is a normal thing.
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