Yesterday we experienced the problem with the following server: Zorro - 76.76.22.149, Sky 76.76.22.153 , Windows8 76.76.22.93 due to the problems in DC, here is description of this problem from our DC:

QUOTE
This morning at 04:31 EST an on-site electrician performing normal
duties caused an electrical fault within a main panel feeding two large
PDUs. This fault was isolated at 05:55 EST restoring service to the two
downstream PDUs.

Due to the nature of the fault, our temporary isolation failed at 11:58
EST causing a second sustained interruption. At this time our electrical
vendor already had full staff on-site due to the previous incident.
During this second interruption we chose to perform emergency
maintenance on the main panel to rectify the original fault. In doing so
permanently restoring proper service to the two downstream PDUs at 13:18
EST.

At this time all faults and isolations have been cleared and service has
been returned to a normal state.