DNS Propagation

skidms
skidms used Ask the Experts™
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Is there anyway to speed up DNS propagation.  Network solutions is telling me it can take up to 48 hours.  I am changing an A Record entry. Thanks.
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Thats a worst case scenario I would bet. Im sure it will be way faster then 48 hours. As for your Q?,  no I dont think you can speed this up.
In your DNS entry, there is a field labeled TTL (Time To Live).  If you set that to a shorter number (in seconds) then the change should propagate quicker.  You'd have to do this ahead of time to make it work properly.  For example, if you were going to make the DNS change next week, change the TTL now so that the new TTL is out there (in 24-48 hours) before you make the more significant change.

If you are making the significant change now, I don't think there's much you can do to speed up the process.
And I think Bill is correct when he says that it will be way faster than 48 hours.  In my experience it seems to happen within a couple of hours.
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Top Expert 2014

Commented:
But if a DNS server ignores a record's TTL and specifies it's own cache time, there's absolutely nothing you can do about it (unless that server is under your control).
@footech:
Do you know how common it is for a DNS server to ignore TTL?  I have no clue and am interested.
Top Expert 2014

Commented:
No, I've heard of them, but that's it.

I'd assume it'd be something like an ISP who is trying to minimize bandwidth.
Most Valuable Expert 2015
Commented:
It's a cya thing for them.

If your DNS is hosted at NetSol, give it up to an hour or so for the change to be propagated among its servers.

DNS doesn't take much bandwidth.  So, it might be more to reduce load on a caching server.

And your TTL determines when your data will be expired in other DNS server caches.
Most Valuable Expert 2015

Commented:
The question has been answered and that answer has been supported.

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Commented:
Thank you.

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