ModsJava
LAN Announcer
Java mod listed for Minecraft 1.20. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthLAN Announcer
Announces the server to the LAN using multicast UDP.
Sends an announcement packet every 1.5 seconds on both IPv4 and IPv6, similar to how the normal Minecraft client does when you "Open to LAN".
Makes the server automagically appear on all Minecraft clients on the same local network.
Really nice when making home server for LANs or for the kids.
Technical details
Every 1.5 seconds it sends the payload:
[MOTD]<server motd>[/MOTD][AD]<server listen port>[/AD]
For example:
[MOTD]A Minecraft Server[/MOTD][AD]25565[/AD]
Over UDP port 4445 to the IP addresses:
224.0.2.60ff75:230::60
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Ships as lanannouncer-1.0.2.jar — drop this file into the mods folder
- Download size: 526 KB
- Download link checked 11 Oct 2026 — working
These come from our own check of the pack file, not from the source page.