inet6num: 2a00,1e28,,/32 netname: NL-EXONET-20100330 country: NL org: ORG-EB19-RIPE admin-c: EXON-RIPE tech-c: EXON-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-EXONET mnt-routes: MNT-EXONET notify: firstname.lastname@example.org created: 2010-03-30T12,21,17Z last-modified: 2017-01-13T13,09,39Z source: RIPE organisation: ORG-EB19-RIPE org-name: Exonet B.V. org-type: LIR address: Grutbroek 15b address: 7008 AK address: Doetinchem address: NETHERLANDS e-mail: email@example.com mnt-ref: RIPE-NCC-HM-MNT mnt-ref: MNT-EXONET mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-EXONET abuse-mailbox: firstname.lastname@example.org abuse-c: EXON-RIPE created: 2009-11-04T13,42,50Z last-modified: 2017-01-13T13,09,44Z source: RIPE phone: +31314820213 fax-no: +31314820214 role: Exonet B.V. Technical Role Account address: Grutbroek 15b address: 7008 AK Doetinchem address: The Netherlands phone: +31 (0)314 82 02 13 fax-no: +31 (0)314 82 02 14 e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: RM9905-RIPE tech-c: RM9905-RIPE mnt-by: MNT-EXONET nic-hdl: EXON-RIPE created: 2010-03-30T12,46,09Z last-modified: 2013-07-11T14,29,37Z source: RIPE route6: 2a00,1e28,,/32 descr: Exonet IPv6 origin: AS12859 mnt-by: MNT-EXONET created: 2011-02-07T14,03,51Z last-modified: 2011-02-07T14,03,51Z 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.