[Hazard Notice] Denial-of-Service attack on Nectar DNS

We're currently experiencing a Denial-of-Service (DoS) attack affecting our domain name service (DNS.) This is likely to affect both access to our other services, as well as any domain which has been delegated to Nectar nameservers. Nectar services affected include (but are not limited to) our Dashboard and managed services such as the Virtual Desktop, BinderHub and JupyterHub. We're currently working to mitigate the attack and will update this post as more information becomes available.