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DNS Propagation

Posted on 2016-07-29
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Last Modified: 2016-08-22
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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Question by:skidms
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9 Comments
 
LVL 11

Expert Comment

by:BillBondo
ID: 41734911
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.
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LVL 22

Accepted Solution

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CompProbSolv earned 1000 total points (awarded by participants)
ID: 41734931
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.
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LVL 22

Expert Comment

by:CompProbSolv
ID: 41734933
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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LVL 41

Expert Comment

by:footech
ID: 41734956
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).
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LVL 22

Expert Comment

by:CompProbSolv
ID: 41735085
@footech:
Do you know how common it is for a DNS server to ignore TTL?  I have no clue and am interested.
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LVL 41

Expert Comment

by:footech
ID: 41735092
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.
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LVL 29

Assisted Solution

by:Jan Springer
Jan Springer earned 1000 total points (awarded by participants)
ID: 41735118
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.
1
 
LVL 29

Expert Comment

by:Jan Springer
ID: 41759071
The question has been answered and that answer has been supported.
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Author Comment

by:skidms
ID: 41765386
Thank you.
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