V6NetHandle: NET6-2610-E8-1 OrgID: DEPAR-1 Parent: NET6-2610-1 NetName: EDNET NetRange: 2610:E8:: - 2610:E8:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation RegDate: 2006-09-27 Updated: 2014-09-08 Source: ARIN OrgID: DEPAR-1 OrgName: Department of Education CanAllocate: Street: 550 12TH STREET SW Street: ED OCIO NETWORK SERVICES City: WASHINGTON State/Prov: DC Country: US PostalCode: 20202-4800 RegDate: 2002-09-19 Updated: 2017-08-09 OrgTechHandle: MORGA409-ARIN OrgAbuseHandle: HILLA30-ARIN OrgTechHandle: THOMP639-ARIN OrgAbuseHandle: KONGA-ARIN OrgTechHandle: RAF9-ARIN OrgAbuseHandle: RAF9-ARIN OrgTechHandle: HILLA30-ARIN OrgAbuseHandle: MORGA409-ARIN OrgTechHandle: LOPEZ628-ARIN OrgTechHandle: KONGA-ARIN OrgAdminHandle: HILLA30-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.