inet6num: 2001,67c,2a4,,/48 netname: DAB-NET country: DE org: ORG-DbA15-RIPE admin-c: AW1484-RIPE tech-c: AW1484-RIPE status: ASSIGNED PI mnt-by: RIPE-NCC-END-MNT mnt-by: MNET-MNT mnt-routes: MNET-MNT mnt-domains: MNET-MNT notify: email@example.com created: 2010-12-15T10,05,53Z last-modified: 2016-04-14T10,08,18Z source: RIPE sponsoring-org: ORG-MTG1-RIPE organisation: ORG-DbA15-RIPE org-name: DAB bank AG org-type: OTHER address: Landsberger Strasse 300 address: 80687 Munich address: Germany e-mail: firstname.lastname@example.org abuse-c: AR26095-RIPE admin-c: AW1484-RIPE admin-c: AW1484-RIPE mnt-ref: MNET-MNT mnt-by: MNET-MNT created: 2010-11-30T14,53,12Z last-modified: 2014-11-17T21,46,47Z source: RIPE person: Alexey Wagner address: DAB Bank AG address: Landsberger Str. 300 address: D-80687 Muenchen address: Germany phone: +49 89 59968633 fax-no: +49 89 59968471 e-mail: email@example.com nic-hdl: AW1484-RIPE mnt-by: MNET-MNT created: 2004-07-15T11,41,28Z last-modified: 2015-03-11T12,14,54Z source: RIPE route6: 2001,67c,2a4,,/48 descr: DAB-NET descr: DAB bank AG origin: AS12664 mnt-lower: MNET-MNT mnt-routes: MNET-MNT mnt-by: MNET-MNT created: 2011-03-11T09,38,57Z last-modified: 2011-03-11T09,38,57Z 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.