/SLASHPLAY
How to see the ban list on a TF2 server
Type listid in the server console to list every banned Steam ID and how long each ban lasts.
listid
Lists the Steam IDs on the ban list.
listid Examples
listid Show banned IDs.
What it does
Shows current ID bans and their lengths.
The game's own description: Lists banned users.
Run it on your server
On a SLASHPLAY server, type it in the Console tab of the server page; the reply shows right under it. A value set there lasts until the server restarts. To keep it, add the line to tf/cfg/server.cfg. New to this? Start a TF2 server first.
Your own
TF2 server.
From $0.03 an hour, only while it runs. New accounts get 6 free tokens.