inet6num: 2a04:ce40::/29 netname: DE-GOPAS-20140410 country: DE org: ORG-GISG1-RIPE admin-c: MP26408-RIPE tech-c: MP26408-RIPE tech-c: SEP7-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: GOPAS-MNT mnt-routes: GOPAS-MNT notify: firstname.lastname@example.org created: 2014-04-10T12:18:16Z last-modified: 2018-01-29T10:05:16Z source: RIPE organisation: ORG-GISG1-RIPE org-name: GOPAS Solutions GmbH org-type: LIR address: Schellerdamm 16 address: 21079 address: Hamburg address: GERMANY phone: +494030379590 fax-no: +4940303795959 admin-c: MP26408-RIPE admin-c: NP4573-RIPE admin-c: SEP7-RIPE mnt-ref: GOPAS-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: GOPAS-MNT abuse-c: GAC60-RIPE created: 2004-04-17T11:07:43Z last-modified: 2018-02-01T11:48:22Z source: RIPE e-mail: email@example.com person: Michael Paganetti address: GOPAS Solutions GmbH address: Heimfelder Strasse 110 address: 21075 Hamburg address: Germany phone: +49 40 30379590 fax-no: +49 40 303795959 e-mail: firstname.lastname@example.org nic-hdl: MP26408-RIPE notify: email@example.com mnt-by: IPHH-NOC mnt-by: GOPAS-MNT created: 2014-03-30T20:13:36Z last-modified: 2014-03-30T20:20:39Z source: RIPE person: Sascha E. Pollok address: IPHH Internet Port Hamburg GmbH address: Technical Staff / Network Operations address: Wendenstrasse 408 address: 20537 Hamburg address: Germany phone: +49 40 3749190 fax-no: +49 40 37491929 e-mail: firstname.lastname@example.org nic-hdl: SEP7-RIPE remarks: remarks: For customer services related issues please remarks: do not contact me directly but use remarks: email@example.com instead. Thank you! remarks: notify: firstname.lastname@example.org mnt-by: AS12731-MNT created: 2002-05-08T23:45:17Z last-modified: 2013-01-23T12:11:41Z source: RIPE route6: 2a04:ce40::/29 descr: GOPAS Solutions GmbH origin: AS13157 mnt-by: GOPAS-AS-MNT created: 2014-07-07T11:45:08Z last-modified: 2018-01-08T18:18:38Z 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.