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The IP address of Ultimatebuild Minecraft server is ultimatebuild.de
Open the game Minecraft, click "Play" button then choose "Multiplayer" option from the menu. Click "Add Server" tab and input the text ultimatebuild.de on "Server Address" then hit "Done". Once the connection is available and turns green you may click on "Join Server" button to play on Ultimatebuild.
Ultimatebuild server supports Minecraft game version: 1.8, you may also use any other older or lower versions to connect and play.
The Ultimatebuild server is currently hosted in Germany.