ModsJava
Subdomain Manager
Free subdomains for your Minecraft server - includes plugins that automatically update your server’s IP and port.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
SubdomainManager Plugin & Free Subdomain Service
Get free subdomains for your Minecraft server and keep them automatically updated.
The SubdomainManager plugin ensures your server’s IP and port are always synced with your subdomain. This is especially useful for dynamic IP setups, proxy networks, or frequently changing environments.
Supported platforms:
- Velocity
- Forge
- Fabric
- BungeeCord
- Bukkit & forks
- Folia
Website: https://subdomain-manager.vercel.app
GitHub: https://github.com/spcv3/subdomain-manager-plugin
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- 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.
Verified by MCModsHub
- Ships as SubdomainManager-velocity-1.0.0.jar — drop this file into the mods folder
- Download size: 9 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.