V6NetHandle: NET6-2620-115-2000-1 OrgID: EBOCO Parent: NET6-2620-1 NetName: EBOCOM NetRange: 2620:115:2000:: - 2620:115:200F:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 12259 RegDate: 2013-03-15 Updated: 2013-03-15 Source: ARIN OrgID: EBOCO OrgName: EBOCOM LLC CanAllocate: Street: 3131 E. Camelback Rd, Street: Suite 320 City: Phoenix State/Prov: AZ Country: US PostalCode: 85016 RegDate: 2004-07-16 Updated: 2013-03-08 OrgAdminHandle: THE54-ARIN OrgAbuseHandle: THE54-ARIN OrgTechHandle: THE54-ARIN OrgNOCHandle: THE54-ARIN OrgTechHandle: WGE8-ARIN OrgNOCHandle: WGE8-ARIN OrgAbuseHandle: WGE8-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.