Abbreviated Dialing Codes

Abbreviated dialing codes (N11) were designated by the Federal Communications Commission (FCC) for communities to use to provide easy access to services.

Below is information on how the University of Michigan uses abbreviated dialing codes on the Ann Arbor, Dearborn, and Flint campus.

There is a per call charge for 411 General Directory Assistance. There are no charges for the other abbreviated numbers.

N11 Code Description Ann Arbor Flint Dearborn
211 Community Info & Referrals; Info about local health & human service agencies 9+211 9+211 N/A
311 Non-emergency police services N/A N/A 311
411 General directory assistance 9+411 9+411 9+411
511 Traffic & transportation info N/A N/A N/A
611 Unassigned N/A N/A N/A
711 Telecommunications relay services (TRS): Operator assistance for persons with a hearing or speech disability to use a telephone via text telephone (TTY) 9+711 9+711 9+711
811 Underground utility safety; Help in determining location of underground lines (MISS DIG in Michigan) 9+811 9+811 9+811
911 Emergency; On campus 911 reaches an emergency number at the Department of Public Safety & Security (DPSS) 911 911 911