Any host offering "unlimited free slots" is either lying, breaking TeamSpeak’s TOS (risking server shutdown), or jamming 100 users into a 32-slot license file.
Free TS3 server hosting is perfect for a or a small group of 10-20 friends who want high-quality audio without monthly fees. It is awful for a serious community. free ts3 server hosting
For a 24/7 server without keeping your home PC on, you can utilize the "Always Free" tiers from major cloud providers. Any host offering "unlimited free slots" is either