Network Addressing

Domain Name Service

Domain Name Service (DNS) is a technology which translates domain names to IP addresses. It also lists mail exchange service for transferring e-mail.

.edu Domain Names

Request DNS Changes for domains ending in

Request DNS Changes for domains ending in

.com .net or .org Domain Names

DNS Requests for domains ending in .com, .net, .org, etc. are provided through alternate service providers. Customers may choose any vendor, however the Office of Information Technology (OIT) recommends EasyDNS. OIT provides intervention support when applicable for customers who select EasyDNS.

Departmental DNS Management

OIT offers IP management in our Infoblox appliance-based solution to departments using the Service Gateway as the user interface.

U of M Network Administrators need access to the Service Gateway in order to manage their own DNS. If your department is migrated to the Service Gateway, ask your department's primary contact to grant you access. If your department is not migrated use 1-HELP (612-301-4357) for any DNS changes you need.

DnsSyncCheck - DNS Manual Cache Management

OIT offers a DNS Cache server management tool called DnsSyncCheck. The application queries our IP Address Management appliance for reference data, systematically performs the same query on our Authoritative Slave servers as well as our Anycast Cache servers, and then compares the datum from each query to the reference. If there are any differences to the reference, the Anycast Cache is invalidated for the probed records. The DnsSyncCheck tool can be used to speed up moves or changes of DNS records.

DHCP Configuration

Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a DHCP server to automatically assign an IP address to an individual computer, allowing you to move your computer from one DHCP-enabled location to another without reconfiguring it.  OIT has enabled DHCP services to several classrooms as well as wireless Access Points (AP) for use by people who have a laptop. In addition, all of the residence halls are configured for DHCP services in the student rooms.

DHCP provides a number of benefits for the University community:

Any computer that is already network-enabled can be registered: DHCP Configuration, Register for DHCP.

MacView - Address Tracking

OIT tracks addresses for all IP, MAC Address and Switch Ports that are under our management. The application MacView uses Management Authorization from Service Gateway to control access to the data served by MacView.


The Internet is undergoing the most significant change in its history. Unprecedented growth and a plethora of network-based devices are forcing a change to TCP/IP protocol. The current network addressing scheme, IPv4, has become inadequate – unable to provide enough addressing space to serve a growing Internet.
IPv6, the next-generation Internet protocol provides exponentially more addressing space. IPv6 provides a smarter packet and a more efficient use of the Internet. This opens the door for growth in services such as Voice over Internet Protocol, electronic conferencing and gaming, to name just a few.

Address Depletion

University’s IPv4 Status: Overall 99% allocated with /20, /21, /22 and /23 subnets 100% allocated, plus /26, /27 and /28 subnets well over 95% allocated.

University’s IPv6 Status:

You need to:

NTS has no current plans to eliminate IPv4. Questions to the OIT IPv6 team at

World IPv6 Day

On 8 June, 2011, Google, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organizations that will offer their content over IPv6 for a 24-hour "test flight". The goal of the Test Flight Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out. (see

IPv6 Adoption

It is important for you to begin adopting IPv6, in tandem with IPv4, now. OIT is prepared to provide you with IPv6 addresses for testing upon request, provided you have a testing environment (sandbox) ready and an adoption plan ready.

The OIT-IPv6 team is available for your questions.