V6NetHandle: NET6-2605-6F00-1 OrgID: LFCL-1 Parent: NET6-2600-1 NetName: LOOSEFOOT NetRange: 2605:6F00:: - 2605:6F00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 40092 RegDate: 2011-07-18 Updated: 2012-02-24 Source: ARIN OrgID: LFCL-1 OrgName: Loose Foot Computing Limited CanAllocate: Street: 340 McCarthy Blvd. Normanview Street: PO Box 31125 City: Regina State/Prov: SK Country: CA PostalCode: S4R 8R6 RegDate: 2001-03-12 Updated: 2017-01-28 OrgNOCHandle: NOC1562-ARIN OrgTechHandle: NOC1562-ARIN OrgAbuseHandle: ABUSE634-ARIN OrgAdminHandle: NOC1562-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.