/SLASHPLAY
How to see banned players in CS:S
Type listid in the CS:S 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 ID bans.
What it does
Shows each banned ID and how long the ban lasts.
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 cstrike/cfg/server.cfg. New to this? Start a CS:S server first.
Your own
CS:S server.
From $0.03 an hour, only while it runs. New accounts get 6 free tokens.