NetHandle: NET-158-63-0-0-1 OrgID: DNIC Parent: NET-158-0-0-0-0 NetName: DARPA-NET NetRange: 220.127.116.11 - 18.104.22.168 NetType: assignment RegDate: 1992-02-14 Updated: 2009-04-09 Source: ARIN OrgID: DNIC OrgName: DoD Network Information Center CanAllocate: Street: 3990 E. Broad Street City: Columbus State/Prov: OH Country: US PostalCode: 43218 RegDate: 1970-01-01 Updated: 2011-08-17 OrgAdminHandle: MIL-HSTMST-ARIN OrgAbuseHandle: REGIS10-ARIN OrgTechHandle: REGIS10-ARIN OrgTechHandle: MIL-HSTMST-ARIN Source: ARIN
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.