AS10000 Nagasaki Cable Media Inc.
188.8.131.52/19 - JAPAN163
inetnum: 184.108.40.206 - 220.127.116.11 netname: JAPAN163 country: JP descr: Japan Network Information Center admin-c: JNIC1-AP tech-c: JNIC1-AP status: ALLOCATED PORTABLE notify: firstname.lastname@example.org mnt-by: MAINT-JPNIC mnt-irt: IRT-JPNIC-JP mnt-lower: MAINT-JPNIC last-modified: 2015-12-01T22:25:02Z 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.