Probably because their DNS servers are from the 90s, and therefore the only way they can cope with the number of lookups externally is to cache, cos the server is only connected upstream at 128Kbit. That is how they serve millions of Australians who use them for lookups, by reducing the number that go upstream. I saw a memo last year from the CEO requesting an upgrade of the upstream, but unfortunately while they were able to upgrade the downstream to a 1Gbit NIC, upgrading the upstream would cost hundreds of millions as they'd need to lay a completely new cable to the US to connect to the root nameserver there.<div>
<br></div><div><font size="1">troll</font><br><br><div class="gmail_quote">On Mon, Feb 18, 2013 at 10:45 AM, Ross Wheeler <span dir="ltr"><<a href="mailto:ausnog@rossw.net" target="_blank">ausnog@rossw.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
This would most likely be caused by DNS caching, you may need to just sit<br>
tight for 24 / 48 hours until the Telstra DNS cache expires the old A<br>
record and refreshes the DNS and gets the new one.<br>
</blockquote>
<br></div>
That raises a seperate issue - pet hate perhaps.<br>
<br>
Why are there so many people (particularly, it seems, large players) - who completely disregard published TTLs?<br>
<br>
Some of us will deliberately set TTLs down quite low (10-30 minutes) a day or two in advance of known changes to customers infrastructure - yet frequently we find some people ignoring the low TTLs and forcing their own (often 1 or 2 days). It's irritating to say the least.<div class="HOEnZb">
<div class="h5"><br>
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