In order to determine this, please contact the TSO Help Desk.
Visit lists.gatech.edu and login with your GT credentials. Along the left-hand side of the screen will be a listing of the mailing lists you're a member of. Any that say "admin" next to them are lists that you're a moderator or owner of. By clicking on the name of those lists, you can see a listing of the owners and moderators of those mailing lists.