I understand this problem but I don't understand how the Range of unused addresses jumps from 215.226.106.80 to 215.226.11.255. Why isn't it 215.226.106.255? How do I get to 215.226.111.255

You are a network planner tasked with developing an IP structure for the following networks. The IP space is to be assigned sequentially from the lowest to the highest address. The largest subnet is to be assigned first then followed in turn by the next largest subnet until they are all assigned. The answers are to be put into the appropriate boxes in the table. You have the address space 215.226.96.0/20. The networks are listed below: Network A: 330 Network B: 9 Network C: 39 Network D: 536 Network E: 517 Network Subnet Masks Network Definition 215.226.104.0 Broadcast Address 215.226.105.255 Router Address 215.226.104.1 Total Hosts 510 B 215.226.106.64 215.226.106.79 215.226.106.65 14 128 215.226.106.1 62 126 C D 215.226.96.1 1022 122 215.226.106.0 215.226.106.63 215.226.96.0 215.226.99.255 215.226.100.0 215.226.103.255 Range of unused addresses: E 215.226.100.1 1022 122 215.226.106.80 - 215.226.111.255 check answers, display solution new