Here is the notice they included in our ticket:
CentriLogic Emergency Maintenance Notification
Maintenance Window
Start: Saturday, November 21, 2015, 01:00 AM EST
End: Saturday, November 21, 2015, 02:00 AM EST
Services Affected
Internet/Network
Expected Impact
During the maintenance window customers may experience brief periods of instability as routes fail over to alternate providers and re-converge throughout the internet.
Details
CentriLogic will be upgrading the hardware controller cards on one of our switches to improve stability, redundancy and capacity on our network. During the maintenance window customers may experience brief periods of instability as routes fail over to alternate devices and re-converge throughout the internet.
We will continue to monitor our services there and will provide an update via Twitter once everything is back online. We apologize to those impacted by this outage and will try to find the disconnect in communication to provide better notice before such maintenance.
-The Secure Dragon Staff
Sabato, Novembre 21, 2015