Use of Private IP Address Space at U.Va.

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This document outlines the use of the private IP ranges at U.Va.

Private IP Networks

U.Va. makes use of private IP address space. Internet standards define private IP address space as:

IP/Mask CIDR Range start Range end
10.0.0.0/255.0.0.0 10.0.0.0/8 10.0.0.1 10.255.255.255
172.16.0.0/255.240.0.0 172.16.0.0/12 172.16.0.1 172.31.255.255
192.168.0.0/255.255.0.0 192.168.0.0/16 192.168.0.1 192.168.255.255

ITC Reserved Private IP Networks

No school or department should make use of any address in the private IP address ranges reserved by U.Va. U.Va. reserves the following private IP address ranges:

IP/Mask CIDR Range start Range end
10.0.0.0/255.0.0.0 10.0.0.0/8
(except 10.129.0.0/16)		 10.0.0.1 10.255.255.255
172.16.0.0/255.240.0.0 172.16.0.0/12 172.16.0.1 172.31.255.255
192.168.1.0/255.255.255.0 192.168.1.0/24 192.168.1.1 192.168.1.255

If use is made of any reserved private IP address space, and that use causes a problem on the U.Va. network, ITC reserves the right to disconnect the problem network segment until the problem is resolved.

ITC Recommended Private IP Networks

Some schools and departments may discover that they have need for private IP address space on the local networks they use at U.Va. Most commonly this private IP address space is needed for firewalls, VPNs (virtual private networks), or computer clusters.

Any school or department that wishes to use private IP address space safely on the U.Va. network should use addresses from either of these ranges:

IP/Mask CIDR Range start Range end

192.168.0.0/255.255.0.0

 192.168.0.0/16
(except 192.168.1.0/24)		 192.168.0.1 192.168.255.255
10.129.0.0/255.255.0.0 10.129.0.0/16 10.129.0.1 10.129.255.255

This private network space can be used freely and will not be interfered with by ITC, however there is no guarantee you will not collide with another group that shares your network.

 

© 2009 by the Rector and Visitors of the University of Virginia.

The information contained on the University of Virginia’s Department of Information Technology and Communication (ITC) website is provided as a public service with the understanding that ITC makes no representations or warranties, either expressed or implied, concerning the accuracy, completeness, reliability or suitability of the information, including warrantees of title, non-infringement of copyright or patent rights of others. These pages are expected to represent the University of Virginia community and the State of Virginia in a professional manner in accordance with the University of Virginia’s Computing Policies.