SoupBlock
Onlineplay.soupblock.netJavaPaper 1.21.4Skyblock
0 / 500 players
Minecraft 1.21 Servers
Looking for a server that runs Minecraft 1.21? ServerBuddy tracks 163 multiplayer worlds on the 1.21 release line, each one verified against a live server-list ping. Sort by players, uptime or recent activity to find an active 1.21 server, then copy the IP and connect with a matching client - joining with the right version avoids the "outdated client" error.
Showing 145–156 of 163 servers
Mythicmon Adventure
Onlinemythicmon.netJavafabric arclight/FeudalKings 1.21.1Modded
0 / 100 players
play.soulmc.netJavaPaper 1.21.11Roleplay
0 / 25 players
ClawB1t SMP
Onlinemc.dannys.roJavaSpigot 1.21.11Survival
0 / 50 players
Xanthos Lifesteal
Onlinexanthos.ccJavaPaper 1.21.5Lifesteal
0 / 30 players
Semi-Vanilla Tyme
Onlineplay.vanillatymeservers.comJavaVelocity 1.7.2-1.21.11Vanilla
0 / 50 players
Horizon RPG
Onlineplay.horizonrpg.netJavaPaper 1.21.10RPG
0 / 30 players
Synergy SMP
Onlinesynergysmp.netJavaPaper 1.21.11Survival
0 / 100 players
Pixel Prison
Onlinepixelprison.modded.funJava1.21.5Prison
0 / 20 players
CDGS Prison
Onlinejail.cdgs.netJavaVelocity 1.7.2-1.21.10Prison
0 / 500 players
BTG Skyblock
Onlineplay.btgskyblock.netJavaPaper 1.21.8Skyblock
0 / 250 players
Unbent Flames
Onlineunbent.mnt.liJavaPaper 1.21.11RPG
0 / 333 players
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Good to know
Minecraft 1.21 Servers FAQ
Common questions about finding and joining servers in this collection.
How do I join a Minecraft 1.21 server?
Set your Minecraft launcher to a 1.21 profile, copy a server IP from the list above, then add it under Multiplayer. Matching your client to the 1.21 release line prevents version-mismatch errors when you connect.
Do 1.21 servers work with newer Minecraft clients?
Many 1.21 servers run cross-version proxies that accept a range of client versions, but the safest approach is to use a 1.21 profile. Each ServerBuddy card shows the exact version a server reports so you can check before joining.
Why should I pick a server on the 1.21 line?
The 1.21 line groups every patch in that release family, so it is the best way to find worlds that match the features and mods you want. ServerBuddy counts 163 servers on this line, ranked by genuine activity.