[dns-operations] Different TTLs in the root zone

Wessels, Duane dwessels at verisign.com
Mon Sep 14 15:21:23 UTC 2015


The ICANN Root Server System Advisory Committee (RSSAC) is very close to
publishing a report on this topic.  I expect "RSSAC 003" to appear on the
web page any day now.

As far back as we can see, the root zone has always used 172800 for
delegation data and 86400 for authoritative data.

When working on the RSSAC 003 document, the caucus did not find any strong
reasons to suggest changing those TTLs.


> On Sep 14, 2015, at 5:39 AM, Stephane Bortzmeyer <bortzmeyer at nic.fr> wrote:
> I see a TTL of 172800 for the NS RRsets in the root zone (and the
> glue) but 86400 for DS (and RRSIG). Is there a specific reason to have
> different TTLs? In .FR, we use the same TTL.
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