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On-campus IP Ranges

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

On-campus IP addresses

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:

IPv4 address space

  • 128.174.0.0 / 16
  • 130.126.0.0 / 16
  • 192.17.0.0 / 16
  • 64.22.176.0 / 20
  • 72.36.64.0 / 18

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.

IPv6 address space

UIUCnet systems are part of the following IPv6 address space:

  • 2620:0:E00::/48

Mobile & Remote IP Ranges

IP ranges used by various CITES services for connecting mobile and remote users can be found at http://ctweb1.cites.illinois.edu/misc/accessnets.txt.