V6NetHandle: NET6-2620-F4-1 OrgID: GREENS-20 Parent: NET6-2620-1 NetName: VEGASCOM6-NET NetRange: 2620:F4:: - 2620:F4:0:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11978 RegDate: 2010-06-03 Updated: 2016-08-14 TechHandle: TECHN1039-ARIN AbuseHandle: ABUSE3013-ARIN NOCHandle: TECHN1039-ARIN Source: ARIN OrgID: GREENS-20 OrgName: Greenspun Corporation CanAllocate: Street: 3960 Howard Hughes Pkwy Street: Ste 900 City: Las Vegas State/Prov: NV Country: US PostalCode: 89169 RegDate: 1999-02-22 Updated: 2017-09-18 OrgTechHandle: TECHN1039-ARIN OrgAdminHandle: DOMAI227-ARIN OrgAbuseHandle: ABUSE3013-ARIN OrgNOCHandle: TECHN1039-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.