V6NetHandle: NET6-2620-30-4000-1 OrgID: CTA-42 Parent: NET6-2620-1 NetName: V6-01 NetRange: 2620:30:4000:: - 2620:30:4000:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 1226 Comment: http://www.otech.ca.gov RegDate: 2013-06-12 Updated: 2013-06-12 Source: ARIN OrgID: CTA-42 OrgName: California Technology Agency CanAllocate: Street: P.O. Box 1810 City: Rancho Cordova State/Prov: CA Country: US PostalCode: 95741-1810 Comment: State of California Comment: (OTECH, DTS, CTA) Comment: http://www.otech.ca.gov/ Comment: +1 (916) 464-4311 Comment: email@example.com RegDate: 2012-08-20 Updated: 2012-08-20 OrgAdminHandle: NETWO2449-ARIN OrgAbuseHandle: NETWO2449-ARIN OrgTechHandle: NETWO2449-ARIN OrgNOCHandle: NETWO2449-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.