V6NetHandle: NET6-2001-1868-1 OrgID: WDCL-9 Parent: NET6-2001-1800-0 NetName: L42-V6-1 NetRange: 2001:1868:: - 2001:1868:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 11404 RegDate: 2003-08-27 Updated: 2016-03-15 Source: ARIN OrgID: WDCL-9 OrgName: WAVE DATA CENTERS, LLC CanAllocate: Street: 401 Kirkland Parkplace Street: Suite 500 City: Kirkland State/Prov: WA Country: US PostalCode: 98033 RegDate: 2015-08-13 Updated: 2018-01-09 OrgNOCHandle: WDHN-ARIN OrgAbuseHandle: WDHN-ARIN OrgAdminHandle: IAT18-ARIN OrgTechHandle: IAT18-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.