This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


gives a list of strings specifying the current IP addresses associated with the computer on which Mathematica is being run.
  • $MachineAddresses gives if no network address is defined, so that the computer is effectively "off line".
  • $MachineAddresses will typically give a list with one element for each network adapter on your computer.
  • If a network configuration is changed, the value of $MachineAddresses may change during the course of a single Mathematica session.
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