You can see how many unique teleportation circles you've already bound to in each zone by going to the Skills pane -> Teleportation -> List Used Teleport Locations. You can also see your currently bound Circle at Skills -> Teleportation -> Get Binding Info.

=== Teleportation Codes ===

Currently known are 25 unique drop locations for using the Teleportation Pillar in the [[Windy View Cave]] in Gazluk (or Elmetaph on Anagoge). Here are the 4-digit codes for each of the unique locations.