AltX
AltX is a Fabric server mod that logs player IP addresses and flags alternate accounts that share an address.
What it does
On a server running AltX, the mod records the IP address each player connects from and compares it with the addresses of other accounts. When two accounts share one, the mod reports them, which helps server staff spot alternate accounts and keep the server in good order. The mod is server-side only: players join without installing anything, and only the server runs it. It is licensed under the GNU General Public License v3.0 or later and is open source. Files are published for Fabric on 1.21.1, 26.3 and the builds between them, with 1.6.0 for 26.3 as the latest file.
Key features
IP address logging
Each player's connection address is recorded on the server, giving staff a log to consult.
Shared address detection
Accounts that connect from the same IP address are identified, which points to likely alternate accounts.
Privacy-conscious use
The author asks server owners to use the logged addresses responsibly and in line with privacy guidelines.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x9 of 9 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does AltX need to be installed on the client?
Does AltX require Fabric API?
Which game versions does AltX support?
In the catalog
AltX is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 8,071 mods support Minecraft 26.3.
More from Ordinary Mods
Similar mods
What the author says
This server mod logs player IP addresses to help identify alt accounts and maintain server integrity. Please use this mod responsibly and in compliance with privacy guidelines. Logs player IP addresses. Detects alternate accounts or shared IPs.
Official listing
- Modrinth page
- modrinth.com/mod/altx
- Owner
- Ordinary Mods
- Published
- 2025-01-07
- Updated on Modrinth
- 2026-09-17
- Facts verified
- 2026-10-15