Some sort of unscheduled network maintenance at the datacenter. We are located in the same DC and weren't notified of anything going on tonight at all and several of our connections within the DC are down. At first glance it looks like it was some sort of issue between 151 Front Street and Hamilton.
Their DNS server is down, so fail to send support email. Their support phone is down too. I have tried to send SMS message to Chris. I wonder that it could be massive power or network down in their city.
According to my log, it's down after 12:11AM GMT+8, about 2 hours and 50 minutes.