2a02:17d0::/32 - RU-KTC-20100624
inet6num: 2a02,17d0,,/32 netname: RU-KTC-20100624 country: RU org: ORG-EP3-RIPE admin-c: MRL42-RIPE tech-c: MRL42-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: EXTRIM-MNT mnt-lower: EXTRIM-MNT mnt-routes: EXTRIM-MNT created: 2010-06-24T11,24,31Z last-modified: 2016-05-20T12,26,08Z source: RIPE organisation: ORG-EP3-RIPE org-name: LLC "KomTehCentr" org-type: LIR address: Komsomolskaya, 37, office 803 address: 620049 address: Yekaterinburg address: RUSSIAN FEDERATION phone: +73433790000 phone: +73433790011 fax-no: +73433790002 e-mail: email@example.com admin-c: ASD11-RIPE admin-c: PL3249-RIPE admin-c: VETR-RIPE tech-c: MRL42-RIPE abuse-c: MRL42-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: EXTRIM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: EXTRIM-MNT created: 2004-04-17T11,52,32Z last-modified: 2016-10-06T11,21,58Z source: RIPE role: MIRALOGIC NOC role address: office 211, 46 Sulimova str., Yekaterinburg, Russia e-mail: firstname.lastname@example.org notify: email@example.com admin-c: ASD11-RIPE admin-c: JLJ26-RIPE admin-c: AV1359-RIPE admin-c: PL3249-RIPE tech-c: MNTR1-RIPE tech-c: VETR-RIPE tech-c: AVM209-RIPE tech-c: NIYU-RIPE abuse-mailbox: firstname.lastname@example.org nic-hdl: MRL42-RIPE mnt-by: EXTRIM-MNT created: 2012-06-07T12,30,27Z last-modified: 2014-02-18T07,21,53Z source: RIPE route6: 2a02,17d0,,/32 descr: MiraLogic Telecommunication Systems origin: AS12668 mnt-by: EXTRIM-MNT created: 2010-06-24T11,41,55Z last-modified: 2012-07-27T09,29,12Z 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.