inet6num: 2a02,5a60,,/32 netname: RU-SIBITEX-20140513 country: RU org: ORG-SJSC2-RIPE admin-c: SNV63-RIPE tech-c: SNV63-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: SIBITEX-MNT mnt-routes: SIBITEX-MNT notify: firstname.lastname@example.org mnt-domains: SIBITEX-MNT created: 2014-05-13T07,42,33Z last-modified: 2017-03-31T07,23,59Z source: RIPE organisation: ORG-SJSC2-RIPE org-name: Sibitex Ltd org-type: LIR address: 48, Chelyuskintsev address: 625000, address: Tyumen, address: RUSSIAN FEDERATION phone: +7 3452 798703 fax-no: +7 3452 798704 e-mail: email@example.com admin-c: SNV63-RIPE admin-c: SZ11-RIPE admin-c: BGM-RIPE mnt-ref: SIBITEX-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: SIBITEX-MNT abuse-c: SAC94-RIPE created: 2004-04-17T11,58,25Z last-modified: 2017-03-31T07,24,00Z source: RIPE person: Sergey N. Voronkov address: Sibitex Ltd. address: Cheluskintsev str., 48 address: 625000, Tyumen address: Russia phone: +7 3452 798703 fax-no: +7 3452 798704 e-mail: firstname.lastname@example.org nic-hdl: SNV63-RIPE mnt-by: SIBITEX-MNT created: 2016-04-07T08,56,40Z last-modified: 2016-04-07T08,56,40Z source: RIPE route6: 2a02,5a60,,/32 descr: Sibitex Ltd. origin: AS12685 pingable: 2a02,5a60,,1 mnt-by: SIBITEX-MNT created: 2014-09-03T05,11,20Z last-modified: 2014-09-05T03,50,01Z 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.