ip network numbers
Ranges designated as âlocalâ will not be routed between core networks. One block of private IP space (172.31.0.0/17) is routeable betwen the ITS core network and Dearborn. One block of private IP space (172.31.128.0/17) is routable between the ITS core network and Flint. Two blocks (10.215.0.0/16 and 10.216.0.0/16) are routable between Dearborn and Flint.