inet6num: 2a00,d58,,/32 netname: DE-BICOS-20081031 country: DE org: ORG-BA11-RIPE admin-c: PSTR1-RIPE tech-c: KIPP1-RIPE status: ALLOCATED-BY-RIR notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: BICOS-NOC created: 2008-10-31T10,01,33Z last-modified: 2016-12-27T09,43,28Z source: RIPE organisation: ORG-BA11-RIPE org-name: Bicos Computer GmbH org-type: LIR address: Gustav-Winkler-Str.22 address: D-33699 address: Bielefeld address: GERMANY phone: +49 521 93219 0 fax-no: +49 521 93219 99 e-mail: firstname.lastname@example.org admin-c: PS17-RIPE abuse-c: BN2045-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: BICOS-NOC mnt-by: RIPE-NCC-HM-MNT mnt-by: BICOS-NOC created: 2004-04-17T11,05,38Z last-modified: 2017-01-25T10,36,34Z source: RIPE tech-c: KIPP1-RIPE person: Wolfgang Kipp address: BICOS COMPUTER GmbH address: Gustav-Winkler-Str.22 address: D-33699 Bielefeld address: Germany phone: +49 521 932190 fax-no: +49 521 9321999 e-mail: email@example.com nic-hdl: KIPP1-RIPE notify: firstname.lastname@example.org mnt-by: BICOS-DOM-MNT created: 2002-06-27T13,17,59Z last-modified: 2014-09-17T10,10,24Z source: RIPE person: Peter Strunk address: BICOS COMPUTER GmbH address: Gustav-Winkler-Str.22 address: D-33699 Bielefeld address: Germany phone: +49 521 932190 fax-no: +49 521 9321999 e-mail: email@example.com nic-hdl: PSTR1-RIPE notify: firstname.lastname@example.org mnt-by: BICOS-DOM-MNT created: 1970-01-01T00,00,00Z last-modified: 2017-01-27T13,20,00Z source: RIPE route6: 2a00,d58,,/32 descr: BICOS.NET v6 origin: AS12466 mnt-by: BICOS-NOC mnt-routes: BICOS-NOC created: 2008-12-16T11,35,58Z last-modified: 2008-12-16T11,35,58Z 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.