2620:10b:7000::/48 - NET-CONVIVA-V6
V6NetHandle: NET6-2620-10B-7000-1 OrgID: CONVI-4 Parent: NET6-2620-1 NetName: NET-CONVIVA-V6 NetRange: 2620:10B:7000:: - 2620:10B:700F:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11483 RegDate: 2012-03-08 Updated: 2012-03-08 Source: ARIN OrgID: CONVI-4 OrgName: Conviva, Inc. CanAllocate: Street: 989 E Hillsdale Blvd Street: Suite 400 City: Foster City State/Prov: CA Country: US PostalCode: 94404 RegDate: 2008-06-23 Updated: 2015-07-26 OrgTechHandle: CIA25-ARIN OrgNOCHandle: CIA25-ARIN OrgAbuseHandle: CIA25-ARIN OrgAdminHandle: SCHMA11-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.