We had a system incident yesterday (06/19/2017 20:49 CEST), where we had to restart parts of the plattform. DNS resolution for current domains are not affected but no updates to new IPs where possible. The Frontend was already available add 23:15 CEST and ready for recieving dns updates. But some network issues where still blocked to set the DNS server to the correct IPs too. Now (06/20/2017 09:30 CEST) is everything operational again.
If you still feel that something is broken please let us know.
Sorry for the inconvenience