inet6num: 2a00,e480,,/32 netname: NL-IBHPU-20110530 country: NL org: ORG-IBB2-RIPE admin-c: ISBC-RIPE tech-c: ISBC-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-lower: MNT-INSTORE mnt-lower: BIT-MNT mnt-routes: BREEDBANDNEDERLAND-MNT mnt-routes: BIT-MNT mnt-domains: MNT-INSTORE created: 2011-05-30T14,52,06Z last-modified: 2016-04-14T09,39,11Z source: RIPE organisation: ORG-IBB2-RIPE org-name: Instore Broadcast BV org-type: LIR address: Innovatieweg 20C address: 7007 CD address: Doetinchem address: NETHERLANDS phone: +31 314 650 310 abuse-c: ISBC-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: MNT-INSTORE mnt-by: RIPE-NCC-HM-MNT admin-c: ISBC-RIPE e-mail: firstname.lastname@example.org tech-c: ISBC-RIPE created: 2011-04-28T13,22,27Z last-modified: 2015-09-21T15,02,48Z source: RIPE role: IB Broadcast Role Object address: IB Broadcast B.V. address: Innovatieweg 20C address: 7007 CD address: Doetinchem address: NETHERLANDS phone: +31 314 650 310 admin-c: BVDB79-RIPE tech-c: BVDB79-RIPE e-mail: email@example.com nic-hdl: ISBC-RIPE mnt-by: MNT-INSTORE created: 2014-07-23T09,46,08Z last-modified: 2015-09-21T15,01,54Z source: RIPE abuse-mailbox: firstname.lastname@example.org
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.