V6NetHandle: NET6-2001-18C0-1 OrgID: COQB Parent: NET6-2001-1800-0 NetName: COQB-IPV6-01 NetRange: 2001:18C0:: - 2001:18C0:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11290 RegDate: 2010-02-10 Updated: 2012-03-02 AbuseHandle: ABUSE616-ARIN NOCHandle: NETWO482-ARIN TechHandle: NETWO482-ARIN Source: ARIN OrgID: COQB OrgName: Cogeco Communications Holdings, Inc. CanAllocate: Street: 4141 boul. St-jean City: Trois-Rivieres State/Prov: QC Country: CA PostalCode: G9B 2M8 RegDate: 1995-02-28 Updated: 2018-06-18 OrgAdminHandle: NETWO482-ARIN OrgAbuseHandle: ABUSE616-ARIN OrgTechHandle: NETWO482-ARIN OrgTechHandle: DELEO39-ARIN Source: ARIN
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.