Frequently Asked Questions

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66. What is my IP-address and MAC-address?

See also: How to connect with VPN using AnyConnect in Windows
See also: How do I connect to the VPN using Ubuntu?
See also: How do I connect a private computer to the department network?
See also: My Internet does not work! How can I find the problem?

The easiest way to see what IP your computer or phone is currently using when contacting Internet is to go to a web page that displays it.

  • It looks like you are using the IP-address when contacting this webserver.
  • You can also go to an external server like which also does some geo-localization and shows what ISP (Internet Service Provider) you currently are using.

How to look up the local IP-address on different operating systems:

Your local IP-address may be translated into another external IP-address over a router using NAT (network address translation).

  1. macOS
  2. Linux
  3. Windows

1. macOS

On a Mac this is also displayed in System Preferences:

  1. Open the Network tab in System Preferences and go to active interface to see the IP-address. Example
  2. Open Advanced. The IP-address is displayed again.
  3. Check MAC-address in Advanced. Example a8:20:66:19:5b:b8

2. Linux

For Linux (or macOS) open a terminal and type ifconfig.

3. Windows

For Windows, open a command window and type ipconfig /all

Example: IP-address is and MAC-address is 08:00:27:27:06:ad

The command getmac also display the currently used MAC-address.


This entry ip was last modified 2017-12-21


This documentation is covered by GNU Free Documentation License.