You can determine the Host ID/Target ID of the machine on which the FlexNet license server is installed:
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The default address is http://localhost:8090 or use your server name (http://<server name>:8090). |
Click Administration at the top-right corner of the webpage. When prompted to sign in, enter the default administrator's credentials (admin/admin).

The lmhostid is a command line utility, which prints the Host ID/Target ID that a FlexNet license server requires on any supported system. The Lmhostid utility is available as an executable called lmutil.
For the exact commands for a specific OS refer to: License Administration Guide (Obtaining System Hostids):
If two or more Ethernet addresses are available on the particular machine, the first one printed by the Host ID command should be used. |