inet6num: 2a04,5781,2000,,/40 netname: ADIDAS-V6-NET country: DE descr: Adidas HQ admin-c: ADIN-RIPE tech-c: ADIN-RIPE notify: firstname.lastname@example.org status: ASSIGNED mnt-by: MNT-ADIDAS created: 2016-05-19T08,35,32Z last-modified: 2016-05-19T09,45,33Z source: RIPE role: adidas netmaster address: adidas AG address: Bambergerstr. 56 address: 91074 Herzogenaurach address: Germany e-mail: email@example.com abuse-mailbox: GLBL_Network_IAS@adidas-group.com admin-c: AP18156-RIPE tech-c: JM10249-RIPE nic-hdl: ADIN-RIPE notify: firstname.lastname@example.org mnt-by: MNT-ADIDAS created: 2012-06-04T13,46,00Z last-modified: 2013-03-27T09,26,01Z source: RIPE route6: 2a04,5781,2000,,/40 origin: AS12337 mnt-by: NORIS-MNT mnt-by: MNT-ADIDAS created: 2016-05-19T08,31,20Z last-modified: 2016-05-19T08,31,20Z source: RIPE
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.