We have just changed our DNS record to point to a new server running IIS. How long will it take until the address is changed to the new server? Some people can still see the old server and some can see the new.
I have flushed the dns on my pc and it seems to be fine although it doesn't with another of my pcs.
Thanks
Best Answer
It depends entirely on the TTLs for the domain or individual resource record, and varies depending on when the record was fetched (and cached) by each distinct resolver throughout the Internet.
You can find out the TTL for your local resolver with dig:
So for serverfault.com, my local resolver will hold onto this record for 44257 more seconds. To find the true TTL, we need to first identify the authoritative nameservers.
Then we can query one of them directly for the TTL.
In this case, the resource record for "serverfault.com" is 86400 seconds (1 day).