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Changes after the dyn dns outage

Looking at NS records today some of yesterdays affected companies decided to change things after the DoS on Dyn. As the NS record is not really a customer facing feature this is more an indication of Dyn's customers expectations. One could argue switching away from Dyn could mean fear of more downtimes to come. Here is a summary of changed NS records so far:
SiteBefore (15.10.)After (22.10.)
about.comdynect.netnsone.com
etsy.comdynect.netdynect.net
awsdns
github.comdynect.netawsdns
paypal.comdynect.netdynect.net
ultradns.org
paypal.com
xhamster.comdynect.netanycastns*.org
zendesk.comdynect.netultradns.*
speedtest.netdynect.netawsdns
I did only check some NS records for changes, just several of the top sites. There are two note-worthy non-changers being Twitter and Github though, everyone else seems to have mitigated. Some to using two providers, several switching to AWS DNS or UltraDNS exclusively.