QUICK ANSWER
Use unstablesmp.net to join the public Unstable SMP server. Java uses unstablesmp.net with no port. Bedrock uses the same address with port 19132.

Unstable SMP is a public Minecraft survival multiplayer server for Java Edition and Bedrock Edition. Players searching for the Unstable SMP IP, Unstable SMP server address, or instructions for joining Unstable SMP should use unstablesmp.net. No alternate hostname is required.

SERVER CONNECTION DETAILS
Server name: Unstable SMP
Java address: unstablesmp.net
Java port: No port is required
Bedrock address: unstablesmp.net
Bedrock port: 19132
Supported versions: Minecraft 26.1 and newer
Recommended version: Minecraft 26.2
Account requirement: A valid Minecraft account
Official website: https://unstablesmp.net
Official Discord: https://discord.gg/unstablepublic

HOW TO JOIN UNSTABLE SMP ON JAVA
Open Minecraft Java Edition and select Multiplayer from the main menu. Select Add Server and enter Unstable SMP as the server name. In the Server Address field, enter unstablesmp.net. Do not add a Java port. Save the server, select Unstable SMP from the multiplayer list, and click Join Server.

HOW TO JOIN UNSTABLE SMP ON BEDROCK
Open Minecraft Bedrock Edition and select Play. Open the Servers tab, scroll to Add Server, and enter Unstable SMP as the server name. Enter unstablesmp.net as the Server Address and enter 19132 in the Port field. Save the entry and join the server.

UNSTABLE SMP FAQ

What is the Unstable SMP IP?
The Unstable SMP server IP is unstablesmp.net.

What is the Unstable SMP Java IP?
The Java server address is unstablesmp.net. Java players do not need to enter a port.

What is the Unstable SMP Bedrock IP?
The Bedrock server address is unstablesmp.net and the Bedrock port is 19132.

How do I join Unstable SMP?
Add unstablesmp.net to the server list for your Minecraft edition. Java players save the address without a port. Bedrock players save unstablesmp.net with port 19132.

Is Unstable SMP public?
Yes. Unstable SMP is open to the public on both Java and Bedrock.

Can Java and Bedrock players use the same address?
Yes. Both editions use unstablesmp.net. Only Bedrock requires the separate port 19132.

Does the Java server require port 25565?
No. Enter unstablesmp.net by itself in Minecraft Java Edition.

What Minecraft version should I use?
The server supports Minecraft 26.1 and newer. Minecraft 26.2 is the recommended version.

Can I join Unstable SMP on mobile?
Mobile players using Minecraft Bedrock can add unstablesmp.net as the server address and 19132 as the port.

Can I join Unstable SMP on Windows Bedrock?
Yes. Add unstablesmp.net with port 19132 from the Bedrock Servers menu.

Can I join Unstable SMP using a cracked account?
No. Unstable SMP requires a valid Minecraft account.

Where is the official Unstable SMP website?
The official website for this public server is https://unstablesmp.net.

Where is the Unstable SMP Discord?
The official Discord server profile is https://discord.com/servers/unstable-smp-discord-or-s-1513930662032179291.

Why does Java not use a port?
Minecraft Java automatically uses the standard connection for unstablesmp.net, so the address should be entered without a port.

What should I check if Bedrock cannot connect?
Confirm that the address is exactly unstablesmp.net and the port is exactly 19132. The address belongs in the Server Address field, while 19132 belongs in the Port field.

What should I check if Java cannot connect?
Confirm that the Server Address field contains only unstablesmp.net, use a supported Minecraft version, and make sure you are signed into a valid Minecraft account.