V6NetHandle: NET6-2620-E9-1 OrgID: KEYBAN Parent: NET6-2620-1 NetName: KEYBANK-IPV6-PRIMARY NetRange: 2620:E9:: - 2620:E9:0:FFFF:FFFF:FFFF:FFFF:FFFF NetType: assignment OriginAS: 11286 Comment: http://www.key.com RegDate: 2011-03-23 Updated: 2012-02-24 Source: ARIN OrgID: KEYBAN OrgName: KeyBank National Association CanAllocate: Street: 127 Public Square City: Cleveland State/Prov: OH Country: US PostalCode: 44115 RegDate: 1970-01-01 Updated: 2011-09-24 OrgAbuseHandle: INTER80-ARIN OrgTechHandle: INTER80-ARIN OrgAdminHandle: INTER80-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.