inet6num: 2a00,12d8,,/29 netname: DE-GHOSTNET-20090901 country: DE org: ORG-GG3-RIPE admin-c: GN-RIPE tech-c: GN-RIPE status: ALLOCATED-BY-RIR remarks: IPv6 Network notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: GHOSTNET-MNT mnt-lower: GHOSTNET-MNT mnt-routes: GHOSTNET-MNT created: 2015-10-12T09,14,56Z last-modified: 2016-05-20T07,55,48Z source: RIPE organisation: ORG-GG3-RIPE org-name: GHOSTnet GmbH org-type: LIR address: Kaiser-Friedrich-Promenade 65 address: 61348 address: Bad Homburg address: GERMANY phone: +49 6172 185025 fax-no: +49 6172 185029 e-mail: email@example.com admin-c: GNSB-RIPE admin-c: GNTK-RIPE admin-c: GN-RIPE admin-c: GNAK-RIPE admin-c: GNSG-RIPE tech-c: GN-RIPE abuse-c: GN-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: GHOSTNET-MNT abuse-mailbox: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: GHOSTNET-MNT created: 2004-04-17T11,07,35Z last-modified: 2016-05-20T07,55,40Z source: RIPE role: GHOSTnet GmbH admin-c: GN-RIPE tech-c: GNSM-RIPE tech-c: GNSG-RIPE address: Kaiser-Friedrich-Promenade 65 address: 61348 Bad Homburg address: Deutschland phone: +49 6172 185025 fax-no: +49 6172 185029 e-mail: email@example.com nic-hdl: GN-RIPE notify: firstname.lastname@example.org abuse-mailbox: email@example.com mnt-by: GHOSTNET-MNT created: 2003-04-17T02,22,16Z last-modified: 2012-01-23T15,55,58Z source: RIPE route6: 2a00,12d8,,/29 descr: GHOSTnet GmbH IPv6 Network origin: AS12586 mnt-by: GHOSTNET-MNT created: 2015-10-12T10,48,08Z last-modified: 2015-10-12T10,48,08Z 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.