V6NetHandle: NET6-2606-1C00-1 OrgID: NN-108 Parent: NET6-2600-1 NetName: NETWORK-NEBRASKA NetRange: 2606:1C00:: - 2606:1C00:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11714 RegDate: 2010-08-30 Updated: 2017-07-12 Source: ARIN OrgID: NN-108 OrgName: Network Nebraska CanAllocate: Street: 14th and R City: Lincoln State/Prov: NE Country: US PostalCode: 68588 RegDate: 2017-05-23 Updated: 2017-07-13 OrgAdminHandle: ADMIN6486-ARIN OrgTechHandle: TECH1045-ARIN OrgAbuseHandle: ABUSE6147-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.