Server is down for update testing, will be back up soon, hopefully updated.
EDIT: Only Build server is down right now, if successful they'll be going down one at a time.
Build and Creative servers are now updated to Minecraft 1.7.9! Skyblock and PvP servers will be online and updated later today.
Unfortunately inventories have been reset, but as far as we know everything else is fine. Sorry for any inconvenience.