inet6num: 2a02,8a8,,/32 netname: UA-KYIVSTAR-20090116 country: UA org: ORG-KG8-RIPE admin-c: KSUA-RIPE tech-c: KSUA-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-lower: KYIVSTAR-MNT mnt-routes: KYIVSTAR-MNT mnt-domains: KYIVSTAR-MNT notify: firstname.lastname@example.org created: 2009-01-16T10,03,29Z last-modified: 2016-04-14T10,47,39Z source: RIPE organisation: ORG-KG8-RIPE org-name: "Kyivstar" PJSC org-type: LIR address: Degtyarevskaya 53 address: 03113 address: Kiev address: UKRAINE phone: +380 44 2473939 fax-no: +380 67 2219251 abuse-c: AR17437-RIPE admin-c: AEL17-RIPE admin-c: KSUA-RIPE admin-c: NP1533-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: KYIVSTAR-MNT mnt-by: RIPE-NCC-HM-MNT created: 2006-01-19T11,31,37Z last-modified: 2016-02-18T14,20,01Z source: RIPE e-mail: email@example.com role: Kyivstar PJSC address: Degtyarevskaya, 53 address: Kiev, Ukraine e-mail: firstname.lastname@example.org admin-c: AEL17-RIPE tech-c: MA19315-RIPE tech-c: AEL17-RIPE nic-hdl: KSUA-RIPE remarks: Please send all abuse reports here, abuse-mailbox: email@example.com mnt-by: KYIVSTAR-MNT notify: firstname.lastname@example.org created: 2003-05-19T14,48,31Z last-modified: 2016-07-08T10,56,37Z source: RIPE route6: 2a02,8a8,,/32 descr: Golden Telecom Ukraine IPv6 network origin: AS12530 mnt-by: GTUA-RT-MNT created: 2011-03-03T14,44,47Z last-modified: 2011-03-03T14,44,47Z 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.