inet6num: 2a02,2e0,,/29 netname: DE-PLUSLINE-20080422 remarks: Plus.line AG IP-Services country: DE org: ORG-PSG2-RIPE admin-c: pln tech-c: pln status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: PLUSLINE-MNT mnt-routes: PLUSLINE-MNT notify: firstname.lastname@example.org created: 2015-02-23T12,22,15Z last-modified: 2016-12-12T17,14,13Z source: RIPE organisation: ORG-PSG2-RIPE org-name: Plus.line AG org-type: LIR address: Mainzer Landstr. 199 address: 60326 address: Frankfurt am Main address: GERMANY phone: +49697589150 fax-no: +496975891533 e-mail: email@example.com mnt-ref: PLUSLINE-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: PLUSLINE-MNT admin-c: RG72-RIPE admin-c: MB10202-RIPE admin-c: GSPL admin-c: FEPL abuse-c: PA7148-RIPE created: 2004-04-17T11,11,22Z last-modified: 2016-12-12T17,14,28Z source: RIPE role: Plus.Line Noc address: Plus.line AG address: Mainzer Landstr. 199 address: 60326 Frankfurt address: Germany phone: +49 69 758915 0 fax-no: +49 69 758915 33 e-mail: firstname.lastname@example.org admin-c: RG72-RIPE tech-c: RG72-RIPE tech-c: MBPL-RIPE tech-c: GSPL nic-hdl: PLN notify: email@example.com mnt-by: PLUSLINE-MNT created: 2002-01-10T13,29,44Z last-modified: 2011-01-17T14,59,39Z source: RIPE route6: 2a02,2e0,,/29 descr: Plus.line AG origin: AS12306 mnt-by: PLUSLINE-MNT created: 2015-02-23T13,31,59Z last-modified: 2015-02-23T13,31,59Z 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.