V6NetHandle: NET6-2620-107-1 OrgID: GEORGE-8 Parent: NET6-2620-1 NetName: GEORGETOWN-UNIVERSITY NetRange: 2620:107:: - 2620:107:FF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11318 RegDate: 2011-09-12 Updated: 2012-03-02 Source: ARIN OrgID: GEORGE-8 OrgName: Georgetown University CanAllocate: Street: 37th and O Streets, NW City: Washington State/Prov: DC Country: US PostalCode: 20057 RegDate: 1990-07-31 Updated: 2016-11-15 OrgTechHandle: GDA96-ARIN OrgAbuseHandle: GDA96-ARIN OrgAdminHandle: GDA96-ARIN OrgNOCHandle: GDA96-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.