On-campus IP Ranges

For IT Pros
This page contains information about the range of IP addresses available to on-campus computers.

If you are a system or network administrator who wishes to allow access to a system from any UIUCnet computer, the following IP address ranges are used to identify systems that belong to the UIUCnet network:

In addition, the IP range 172.16.0.0 / 13 is used for internal purposes only. Systems in this IP range can be seen by other UIUCnet computers, and by computers on the NCSA network, but they cannot be reached by any computer that is not part of either UIUCnet or the NCSA network.