inet6num: 2a06,8a00,,/29 netname: CH-SANDRO-20150930 country: CH org: ORG-SB433-RIPE admin-c: SB21884-RIPE tech-c: SB21884-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: ch-sandro-1-mnt mnt-routes: ch-sandro-1-mnt created: 2015-09-30T09,32,21Z last-modified: 2017-01-17T13,31,01Z source: RIPE organisation: ORG-SB433-RIPE org-name: Sandro Bolliger org-type: LIR address: Eichliackerstrasse 71 address: 8406 address: Winterthur address: SWITZERLAND e-mail: email@example.com admin-c: SB21884-RIPE tech-c: SB21884-RIPE abuse-c: AR33648-RIPE mnt-ref: ch-sandro-1-mnt mnt-by: RIPE-NCC-HM-MNT mnt-by: ch-sandro-1-mnt mnt-ref: RIPE-NCC-HM-MNT created: 2015-09-29T07,21,46Z last-modified: 2017-01-17T13,31,05Z source: RIPE phone: +41788620717 person: Sandro Bollliger address: Eichliackerstrasse 71 address: 8406 address: Winterthur address: SWITZERLAND phone: +41788620717 nic-hdl: SB21884-RIPE mnt-by: ch-sandro-1-mnt created: 2015-09-29T07,21,45Z last-modified: 2015-09-29T07,21,46Z source: RIPE route6: 2a06,8a00,,/29 descr: Ravana NET, Switzerland origin: AS12307 mnt-by: ch-sandro-1-mnt created: 2015-10-07T13,24,07Z last-modified: 2015-10-07T13,24,07Z 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.