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ITS Network Services

IP Address Space at UVa

This page describes the overall IP (Internet protocol) address space in use at the University of Virginia.

UVa owns 2 class B public networks and has the use of parts of a third. Public IP address space can connect to other public addresses anywhere on the Internet. Addresses and networks in the UVa public address space must be allocated by hostmaster@virginia.edu or by the ITS DHCP servers.

Public IP address ranges

Network IP/Mask CIDR Range start Range end
Standard 128.143.0.0/255.255.0.0 128.143.0.0/16 128.143.0.1 128.143.255.255
Secure/Clinical/NAT 137.54.0.0/255.255.0.0 137.54.0.0/16 137.54.0.1 137.54.255.255
Dormitories/NAT 199.111.160.0/255.255.224.0 199.111.160/19 199.111.160.1  199.111.191.255
Dormitories/NAT 199.111.192.0/255.255.192.0 199.111.192/18 199.111.1921 199.111.255.255

In addition UVa makes use of private IP address space. No private IP address attached to the UVa network can be seen or accessed anywhere outside the UVa network.

Private IP address ranges - Internal UVa Access Only

Network IP/Mask CIDR Range start Range end
Registration 10.160.0.0/255.248.0.0 10.160.0.0/13 10.160.0.1 10.167.255.255
Standard 172.16.0.0/255.255.0.0 172.16.0.0/16 172.16.0.1 172.16.255.255
Secure 172.18.0.0/255.255.0.0 172.18.0.0/16 172.18.0.1 172.18.255.255
Dormitories 172.19.0.0/255.255.0.0 172.19.0.0/16 172.19.0.1 172.19.255.255

Private IP address ranges - Internet Access via NAT/Public IP

Network IP/Mask CIDR Range start Range end
More Secure Wireless
Encrypted (jefferson)
172.23.0.0/255.255.0.0 172.23.0.0/16 172.23.0.1 172.23.255.255
Standard Wireless
Encrypted (cavalier)
172.25.0.0/255.255.0.0 172.25.0.0/16 172.25.0.1 172.25.255.255
Standard Wireless
Unencrypted (wahoo)
172.27.0.0/255.255.0.0 172.27.0.0/16 172.27.0.1 172.27.255.255
Dormitories Wireless
Encrypted (cavalier)
172.26.0.0/255.255.192.0 172.26.0.0/18 172.26.0.1 172.26.63.255
Dormitories Wireless
Unencrypted (wahoo)
172.26.128.0/255.255.192.0 172.26.128.0/18 172.26.128.1 172.26.191.255
Dormitories Wired 172.26.192.0/255.255.192.0 172.26.192.0/18 172.26.192.1 172.26.255.255
Guest Wireless
Unencrypted (Welcome…)
10.142.0.0/255.254.0.0 10.142.0.0/15 10.142.0.1 10.143.255.255
Guest Wireless
Unencrypted (Welcome...)
10.144.0.0/255.254.0.0 10.144.0.0/15 10.144.0.1 10.145.255.255

These networks have outbound access to the Internet through network address translation, which provides a temporary public IP address.

For further information, see Use of Private IP Space at UVa.

  Page Updated: Tuesday 2012-08-21 18:15:38 EDT