IP Addresses

All internal HICS IP addresses on the curriculum (proxied) range are on a 172.*  range of addresses. Transparent proxy IP addresses (often used for BYOD) will have a 10.* range.

We often get asked about IP address subnets and how different subnet ranges are calculated. There are lots of online subnet calculators you can use but being the helpful people we are, we have put together some examples. Here you go:

Subnet: 172.25.50.0/24
Address range: 172.25.50.1 – 172.25.50.254
254 available addresses
Default gateway: 172.25.50.254

Subnet: 172.25.50.0/23
Address range: 172.25.50.1 – 172.25.51.254
510 available addresses
Default gateway: 172.25.51.254

Subnet: 172.25.50.0/22
Address range: 172.25.50.1 – 172.25.53.254
1022 available addresses
Default gateway: 172.25.53.254

Subnet: 172.25.50.0/21
Address range: 172.25.50.1 – 172.25.57.254
2046 available addresses
Default gateway: 172.25.57.254

Subnet: 172.25.50.0/20
Address range: 172.25.50.1 – 172.25.66.254
4094 available addresses
Default gateway: 172.25.66.254