I didn't know where to put this so I put it here. How do some servers have crazy numbers of dimensions? Edit: All of those servers have either RFTools or Mystcraft, but dim creation is banned... Just curious.
Most notably the 162 worlds on the galactic science server. Found this accidentally while checking if a server crashed. Edit: @up Thanks, this explains everything.
These are (player created) space stations from galacticraft. But this number doesn't mean that they are all loaded.