inet6num: 2001,868,,/29 netname: DE-IPHH-20020725 country: DE org: ORG-IIPH1-RIPE admin-c: SEP7-RIPE tech-c: SEP7-RIPE tech-c: JM1448-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12731-MNT mnt-routes: AS12731-MNT notify: firstname.lastname@example.org created: 2012-10-01T15,31,10Z last-modified: 2016-09-27T09,40,53Z source: RIPE organisation: ORG-IIPH1-RIPE org-name: IPHH Internet Port Hamburg GmbH org-type: LIR address: Wendenstrasse 408 address: 20537 address: Hamburg address: GERMANY phone: +494037491910 fax-no: +494037491929 mnt-ref: AS12731-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12731-MNT admin-c: AK259-RIPE admin-c: JM1448-RIPE admin-c: SEP7-RIPE admin-c: PG2978-RIPE abuse-c: IPHH1-RIPE created: 2004-04-17T11,08,58Z last-modified: 2016-09-27T09,41,07Z source: RIPE e-mail: email@example.com person: Johannes Mattes address: IPHH Internet Port Hamburg GmbH 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: JM1448-RIPE notify: email@example.com mnt-by: IPHH-NOC created: 2002-06-26T14,55,07Z last-modified: 2009-03-11T17,00,09Z 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: 2001,868,,/29 descr: DE-IPHH-2001-0868 descr: IPHH Internet Port Hamburg GmbH origin: AS12731 mnt-by: AS12731-MNT notify: email@example.com created: 2012-10-02T07,57,04Z last-modified: 2012-10-02T07,57,04Z 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.