V6NetHandle: NET6-2606-C00-1 OrgID: CTG-41 Parent: NET6-2600-1 NetName: CHT-GLOBAL NetRange: 2606:C00:: - 2606:C00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 9505 RegDate: 2010-08-27 Updated: 2012-03-02 NOCHandle: NMC18-ARIN TechHandle: IPTEC6-ARIN AbuseHandle: ABUSE841-ARIN Source: ARIN OrgID: CTG-41 OrgName: Chunghwa Telecom Global, INC CanAllocate: Street: 2107 N. First Street, suite 580 City: San Jose State/Prov: CA Country: US PostalCode: 95131 RegDate: 2005-02-24 Updated: 2017-07-24 OrgNOCHandle: IPADM216-ARIN OrgAbuseHandle: ABUSE841-ARIN OrgNOCHandle: NMC18-ARIN OrgTechHandle: IPTEC6-ARIN OrgAbuseHandle: IPADM216-ARIN OrgTechHandle: IPADM216-ARIN OrgAdminHandle: IPADM216-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.