inet6num: 2001,67c,27a0,,/48 netname: DE-FREINET-20150918 country: DE org: ORG-HGCK7-RIPE admin-c: CM9180-RIPE admin-c: RK9162-RIPE tech-c: CM9180-RIPE tech-c: RK9162-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: FREINET-MNT mnt-by: HAUFE-MNT created: 2015-09-18T15,05,02Z last-modified: 2017-05-26T13,39,39Z source: RIPE organisation: ORG-HGCK7-RIPE org-name: Haufe-Lexware GmbH & Co. KG org-type: LIR address: Munzinger Strasse 9 address: 79111 address: Freiburg address: GERMANY phone: +49 7618980 e-mail: firstname.lastname@example.org admin-c: RK9162-RIPE tech-c: RK9162-RIPE abuse-c: AR36130-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: HAUFE-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: HAUFE-MNT created: 2016-04-19T07,09,48Z last-modified: 2016-06-14T14,40,15Z source: RIPE person: Christian Mertink address: FreiNet GmbH address: Loerracher Strasse 5a address: D-79115 Freiburg phone: +49 761 496 1799 fax-no: +49 761 496 1790 e-mail: email@example.com nic-hdl: CM9180-RIPE remarks: PGP public key certificate object, PGPKEY-CAD8E645 notify: firstname.lastname@example.org mnt-by: FREINET-MNT created: 2012-01-03T13,19,37Z last-modified: 2012-01-03T13,42,47Z source: RIPE person: Ralf Keienburg address: Munzinger Strasse 9 address: 79111 address: Freiburg address: GERMANY phone: +49 7618980 nic-hdl: RK9162-RIPE mnt-by: HAUFE-MNT created: 2016-04-19T07,09,47Z last-modified: 2016-04-29T09,42,12Z source: RIPE route6: 2001,67c,27a0,,/48 origin: AS44404 descr: Haufe-Lexware GmbH & Co. KG mnt-by: HAUFE-MNT created: 2017-05-27T20,52,12Z last-modified: 2017-05-27T20,52,12Z 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.