inet6num: 2a06,8800,,/29 netname: IL-LAN-WAN-20150928 country: IL org: ORG-LIL13-RIPE admin-c: MA18009-RIPE tech-c: MA18009-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: il-lan-wan-1-mnt mnt-routes: il-lan-wan-1-mnt created: 2015-09-28T10,47,15Z last-modified: 2017-01-04T04,11,46Z source: RIPE organisation: ORG-LIL13-RIPE org-name: LAN-WAN I.T LTD org-type: LIR address: P.O.B 671 ZIP 30100 address: 30100 address: Baqa al-Gharbiyye address: ISRAEL e-mail: email@example.com admin-c: MA18009-RIPE tech-c: MA18009-RIPE abuse-c: AR33623-RIPE mnt-ref: il-lan-wan-1-mnt mnt-by: RIPE-NCC-HM-MNT mnt-by: il-lan-wan-1-mnt mnt-ref: RIPE-NCC-HM-MNT created: 2015-09-25T12,53,33Z last-modified: 2017-01-04T04,11,51Z source: RIPE phone: +972-772004065 person: Network Operation Center address: Baqa al-Gharbiyye P.O.B 671 ZIP 30100 address: ISRAEL phone: +972-772004065 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com nic-hdl: MA18009-RIPE mnt-by: il-lan-wan-1-mnt created: 2015-09-25T12,53,32Z last-modified: 2015-09-26T05,14,00Z source: RIPE route6: 2a06,8800,,/29 descr: LAN WAN IT Networks origin: AS12517 mnt-by: il-lan-wan-1-mnt created: 2015-09-28T13,44,16Z last-modified: 2015-09-28T13,44,16Z 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.