I know this has been discussed between the CSC and PTI, and the feedback we have gotten is that the relationship between PTI and the larger RSPs allow them to plan for bulk changes and updates in advance so that the teams are able to align on workloads for such events etc.

On 6/3/2020 2:32:56 PM, Peter Koch <pk@denic.de> wrote:
Dear fellow IFRT members,

I'd like to share an observation that is rather operational and may or
may not be within the IFR scope (and might also not be new). It shouldn't
fall into a void, so here it is:

With approx. 1500 TLDs the net has seen some concentration, so that
a single entity is responsible for or providing technical services
to multiple TLDs, be that 100, 200 or more. Sometimes, contact
details change, sometimes technical parameters change (like
nameserver names or addresses) and in some cases parameters
are changed regularly (DNSSEC key rollover). I've seen this happen
in larger bundles and am wondering whether there is any noticable
effect on workloads or infrastructure and how that might change
if the bundles grow larger. I'm pretty confident everybody
involved is aware of scaling effects and given that it's routine
operation, no immediate risk should exist.

Best regards,
Peter
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