V6NetHandle: NET6-2607-F498-1 OrgID: VISC Parent: NET6-2600-1 NetName: IPV6-1 NetRange: 2607:F498:: - 2607:F498:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF NetType: allocation OriginAS: 10835 RegDate: 2008-05-07 Updated: 2012-03-02 TechHandle: JM810-ARIN AbuseHandle: NOC1692-ARIN NOCHandle: NOC1692-ARIN Source: ARIN OrgID: VISC OrgName: Visionary Communications, Inc. CanAllocate: Street: 1001 S. Douglas, Hwy. Street: Suite 201 City: Gillette State/Prov: WY Country: US PostalCode: 82716 RegDate: 1997-12-08 Updated: 2017-01-28 OrgNOCHandle: NOC1692-ARIN OrgTechHandle: JM810-ARIN OrgAdminHandle: JM810-ARIN OrgAbuseHandle: JM810-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.