V6NetHandle: NET6-2605-80-1 OrgID: ESECU-4 Parent: NET6-2600-1 NetName: ESD-UNITED-V6 NetRange: 2605:80:: - 2605:80:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11831 RegDate: 2013-09-17 Updated: 2013-09-18 Source: ARIN OrgID: ESECU-4 OrgName: eSecureData CanAllocate: Street: 1478 Hartley Ave. City: Coquitlam State/Prov: BC Country: CA PostalCode: V3K 7A1 RegDate: 2008-03-31 Updated: 2017-01-28 OrgAbuseHandle: SUPPO579-ARIN OrgNOCHandle: SUPPO579-ARIN OrgAdminHandle: LIANG56-ARIN OrgTechHandle: SUPPO579-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.