inet6num: 2a02,390,,/32 netname: UK-IDNET-20080519 country: GB org: ORG-IA64-RIPE admin-c: SD567-RIPE tech-c: SD567-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: IDNET-MNT mnt-routes: IDNET-MNT notify: firstname.lastname@example.org created: 2008-05-19T13,52,13Z last-modified: 2016-10-06T09,05,07Z source: RIPE organisation: ORG-IA64-RIPE org-name: Infinity Developments Limited org-type: LIR address: 1 Flint Road address: SG6 1HJ address: Letchworth, Herts address: UNITED KINGDOM phone: +44 1462 659350 fax-no: +441462673963 e-mail: email@example.com abuse-c: AR17705-RIPE admin-c: AS31671-RIPE admin-c: PH4291-RIPE admin-c: MTW3-RIPE admin-c: SD567-RIPE mnt-ref: IDNET-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: IDNET-MNT created: 2004-04-17T12,15,59Z last-modified: 2016-10-06T09,05,20Z source: RIPE person: Simon Davies address: IDNET address: Bridge House address: Bridge Street address: Hitchin address: Herts address: SG5 2DF address: United Kingdom phone: +441462480092 fax-no: +441462673963 e-mail: firstname.lastname@example.org nic-hdl: SD567-RIPE notify: email@example.com mnt-by: IDNET-MNT created: 1970-01-01T00,00,00Z last-modified: 2009-08-06T14,07,41Z source: RIPE route6: 2a02,390,,/32 descr: IDNET primary IPv6 address block origin: AS12496 mnt-by: IDNET-MNT created: 2013-05-10T10,24,53Z last-modified: 2013-05-10T10,24,53Z 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.