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The IP address of Matrix network Minecraft server is matrixnetwork.org
Open the game Minecraft, click "Play" button then choose "Multiplayer" option from the menu. Click "Add Server" tab and input the text matrixnetwork.org on "Server Address" then hit "Done". Once the connection is available and turns green you may click on "Join Server" button to play on Matrix network.
Matrix network server supports Minecraft game version: 1.15.2, you may also use any other older or lower versions to connect and play.