AS38883 FireNet Pty Ltd
18.104.22.168/21 - FIRENET
inetnum: 22.214.171.124 - 126.96.36.199 netname: FIRENET descr: FireNet Pty Ltd country: AU admin-c: TS437-AP tech-c: TS437-AP status: ALLOCATED NON-PORTABLE mnt-by: MAINT-FIRENET-AU mnt-lower: MAINT-FIRENET-AU mnt-routes: MAINT-FIRENET-AU mnt-irt: IRT-FIRENET-AU last-modified: 2016-10-19T22:34:18Z source: APNIC
IP address subranges within this IP range
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.