V6NetHandle: NET6-2606-A400-1 OrgID: REAL Parent: NET6-2600-1 NetName: REALNETWORKS-IPV6-01 NetRange: 2606:A400:: - 2606:A400:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11922 Comment: Real Networks IPV6 initial allocation RegDate: 2010-09-17 Updated: 2013-08-29 NOCHandle: GNET-ARIN AbuseHandle: GNET-ARIN TechHandle: VASHI2-ARIN Source: ARIN OrgID: REAL OrgName: RealNetworks, Inc. CanAllocate: Street: 1501 1st Avenue S. Suite 600 City: Seattle State/Prov: WA Country: US PostalCode: 98132 RegDate: 1999-02-22 Updated: 2017-01-28 OrgTechHandle: VASHI2-ARIN OrgAbuseHandle: VASHI2-ARIN OrgAdminHandle: VASHI2-ARIN OrgAbuseHandle: GNET-ARIN OrgTechHandle: GNET-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.