Hi!
On 2019-06-03 UTC+2 14:00 (next monday) we will be rebuilding the cloudservices1003 server, that holds the designate service which serves DNS request for CloudVPS and Toolforge.
We have a backup server -cloudservices1004-, so we don't expect a lot of downtime. But DNS queries are really fast, and there may be a lot of them that will fail while we stabilize the DNS service.
Please reach out to the WMCS team if you need more details or have any doubts.
regards.