V6NetHandle: NET6-2620-106-C000-1 OrgID: GWU Parent: NET6-2620-1 NetName: GWNETV6 NetRange: 2620:106:C000:: - 2620:106:C00F:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11039 RegDate: 2011-08-25 Updated: 2012-02-24 TechHandle: GALLO3-ARIN Source: ARIN OrgID: GWU OrgName: The George Washington University CanAllocate: Street: 801 22nd Street, NW Street: Academic Center, Suite B148 City: Washington State/Prov: DC Country: US PostalCode: 20052 RegDate: 1986-09-24 Updated: 2017-12-20 OrgAbuseHandle: ABUSE575-ARIN OrgTechHandle: GALLO3-ARIN OrgTechHandle: DA66-ARIN OrgAdminHandle: DA66-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.