inet6num: 2a00,4e80,,/32 netname: PS-COOLNET-20110427 country: PS org: ORG-CNCP1-RIPE admin-c: RANI1-RIPE tech-c: RANI1-RIPE status: ALLOCATED-BY-RIR notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: ranialami-mnt mnt-lower: ranialami-mnt mnt-routes: ranialami-mnt created: 2011-04-27T05,53,28Z last-modified: 2016-07-21T07,56,17Z source: RIPE organisation: ORG-CNCP1-RIPE org-name: Coolnet New Communication Provider org-type: LIR address: Haron Rashid 3 | P.O.Box 20098 address: Jerusalem address: 91200 address: PALESTINE, STATE OF phone: +9726277891 fax-no: +97226277042 e-mail: firstname.lastname@example.org admin-c: RANI1-RIPE admin-c: ISAM-RIPE admin-c: HA69-RIPE abuse-c: ABCO2013-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: ranialami-mnt abuse-mailbox: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: ranialami-mnt created: 2009-06-03T14,24,49Z last-modified: 2016-09-29T19,31,19Z source: RIPE person: Rani Alami address: Jerusalem abuse-mailbox: firstname.lastname@example.org phone: +972 2 6277891 fax-no: +972 2 6277042 nic-hdl: RANI1-RIPE created: 2009-06-08T10,26,19Z last-modified: 2014-03-20T14,16,57Z source: RIPE mnt-by: ranialami-mnt route6: 2a00,4e80,,/32 descr: 2a00,4e80,,/32 origin: AS12754 mnt-by: ranialami-mnt created: 2011-06-20T12,51,58Z last-modified: 2011-06-20T12,51,58Z 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.