Issue resolved. Luckily, no major impact to dedicated servers and VDS farms noticed, most (more than 90%) of systems was online during the outage. Unfurtunately, both primary and secondary routers was affected, at least two of six independent power feeds was unavailable.
We still waiting details from datacenter' staff about outage. Please contact our support teams for more information and assistance, if required.
Our sincere apologies for the inconvenience.