Class B addresses are used for Sunset Academy, to be able to support the expected growth of the next ten years. The network number assigned to Sunset is 18.104.22.168.
Four bits are borrowed from the host portion of the address for subnetting. There are six subnets for Sunset Academy, five of them for the curriculum LAN. This is to reduce the size of the broadcast domains, which are expected to get bigger over the years. The IP address for the administrative LAN is 22.214.171.124, and for the curriculum LANs: 126.96.36.199, 160.56, 188.8.131.52, 184.108.40.206, 220.127.116.11, and 18.104.22.168.