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UMnet Administration

The mission of UMnet Administration is to support the network administrators at the University of Michigan, coordinate the networking infrastructure and network numbers on campus, and maintain the UMnet Backbone and UM Backbone Interconnect Network (UMBIN) infrastructures. UMnet Administration also manages and maintains the ITCS Virtual Firewall and Campus VPN services.

Backbone Router Services

The UMnet Network Information (NICR) Database is available for you to search and review the current configuration of a network within the UMnet Admin database.

Other network tools are available at the Repair and Network Operations Center (NOC).

To establish new service or for questions regarding services or billing, contact your ITCom Project Manager.

For questions regarding a network, contact UMnet Administration at umnet@umich.edu or 734-647-4200.

For users experiencing network problems, call ITCom Repair at 734-647-8888.

For information on UMnet's traffic scanning for hacks and infections, see Hackfinder Information.

Please note that your network may be supported by other U-M information technology providers

Policies

IP Networks Assigned to the University of Michigan

IP Range Network
67.194.0.0/16 U-M Ann Arbor (UMnet; Wireless nets and Residence halls)
141.211.0.0/16 U-M Ann Arbor (UMnet)
141.212.0.0/16 U-M Ann Arbor (CAEN)
141.213.0.0/17 U-M Ann Arbor (CAEN)
141.213.128.0/17 U-M Ann Arbor (UMnet)
141.214.0.0/16 U-M Ann Arbor (UMHS)
141.215.0.0/16 U-M Dearborn
141.216.0.0/16 U-M Flint
192.12.80.0/24 Networks that interconnect UMnet, UMHS, CAEN and MichNet
192.231.253.0/24 UMnet NOC
198.108.8.0/21 U-M IP Telephony and network infrastructure
198.111.224.0/22 UMnet Internet2 lab networks
198.111.181.0/25 U-M Ann Arbor (UMHS public-facing servers)
207.75.144.0/20 UMnet off-campus (WAN-connected) networks

For information on private IP addressing at U-M, see Assigning Private IP Network Numbers.

Notes:
U-M received a new IP address allocation (67.194.0.0/17) August 20, 2007
U-M received a new IP address allocation (67.194.128.0/17) May 29, 2008
These two are merged into a single block: 67.194.0.0/16

For More Information

UMnet Administration Group
umnet.admin@umich.edu

Phone: (734) 647-4200
4251 Plymouth Rd.
Arbor Lakes Building 3, Suite 1400
Ann Arbor, MI 48105-3640