V6NetHandle: NET6-2600-C0C-1002-1 OrgID: C06500963 Parent: NET6-2600-C00-1 NetName: INAP-TOR001-NETSKOPE-IPV6-11087-134586 NetRange: 2600:C0C:1002:: - 2600:C0C:1002:0:FFFF:FFFF:FFFF:FFFF NetType: reassignment Comment: rirCallout v1.07, Tue May 16 18:46:11 -0400 2017 RegDate: 2017-05-16 Updated: 2017-05-16 Source: ARIN OrgID: C06500963 OrgName: Private Customer CanAllocate: Street: Private Residence City: Los Altos State/Prov: CA Country: US PostalCode: 94022 Comment: created by rirCallout v1.07 for NET6-2600-C00-1 RegDate: 2017-05-16 Updated: 2017-05-16 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.