Campus Public IP Space
The University of Arkansas has been allocated public IP space in the range of 220.127.116.11/16. Building networks are currently being converted to use private IP space, bringing increased security, hostname-based dynamic DNS and increased subnet capacity. Moving forward, public IP addresses will be assigned on a case-by-case basis only.
Campus Private IP Space
Each building network provides a Class A IPv4 subnet and an IPv6 subnet. IPv4 addresses are private and not accessible directly from the internet. Network address translation (NAT) is used to pass traffic to the Internet. All private addresses can be directly accessed on-campus.
Devices are automatically assigned a temporary address through DHCP, starting at the top end of each IP range. Static IP addresses are assigned at the bottom of the range.
|IP range||10.4.0.1 to 10.4.7.254|
|Dynamic range||10.4.0.100 to 10.4.7.254|
|Static range||10.4.0.6 to 10.4.0.99|
|10.4.0.1 to 10.4.0.5|
NAT (Network Address Translation)
Private IPs NAT at the campus central firewall to Internet hosts only. Private networks route to all Campus IP space, including 18.104.22.168/255.255.0.0 directly. Currently, an external IP will appear as an address in the 22.214.171.124/255.255.255.0 subnet. Most applications will operate in a NAT environment.
Private Static IP Policy
- Reserved IP blocks for static IP allocation outside of DHCP ranges
- Users can request static IP addresses by creating a ticket.
- Approved campus IT can use the Infoblox Grid tool at passage.uark.edu to register static IP devices
- NET must approve changes and additions
- Changes can be scheduled to take effect at a specific time
The domain name system (DNS) servers on campus answer requests from local clients when resolving internet domain names to IP addresses. These servers also answer outside requests for uark.edu or other campus-hosted websites.
DNS server addresses are configured automatically on most devices using DHCP. Devices configured with static IPs or other devices not using DHCP must be configured with the DNS server addresses listed below.
|Primary DNS Server||10.250.1.50||2604:fc00:c:250::1:50|
|Secondary DNS Server||10.58.8.50||2604:fc00:dc:1061::8:50|
Note: For security reasons, access to outside DNS servers like Google DNS or Open DNS are not allowed.
Network Time Protocol Server
The following DNS server is used for network time protocol (NTP), synchronizing time for computers and mobile devices on campus.