inet6num: 2001,1aa0,,/29 netname: HU-DELTAV-20040317 country: HU org: ORG-DC2-RIPE admin-c: VINC1-RIPE tech-c: VINO2-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12301-MNT created: 2013-10-11T10,39,48Z last-modified: 2016-07-12T08,59,57Z source: RIPE organisation: ORG-DC2-RIPE org-name: Invitech Megoldasok Zrt. org-type: LIR address: Edison u. 4. address: 2040 address: Budaors address: HUNGARY phone: +3618011500 fax-no: +3618011501 e-mail: email@example.com admin-c: GOME2-RIPE admin-c: JS6489-RIPE admin-c: CSL8-RIPE admin-c: IOS2-RIPE admin-c: AO2333-RIPE admin-c: IB3407-RIPE abuse-c: vinc1-ripe mnt-ref: RIPE-NCC-HM-MNT mnt-ref: AS12301-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12301-MNT created: 2004-04-17T11,25,53Z last-modified: 2016-10-25T07,14,07Z source: RIPE role: INVITEL IP NETWORK COORDINATION CENTER address: INVITEL Zrt. address: H-2040 Budaors address: Edison utca 4. e-mail: firstname.lastname@example.org tech-c: VINO2-RIPE nic-hdl: VINC1-RIPE notify: email@example.com notify: firstname.lastname@example.org abuse-mailbox: email@example.com mnt-by: AS12301-MNT created: 2002-05-22T10,19,38Z last-modified: 2016-04-01T21,31,02Z source: RIPE role: INVITEL IP NETWORK OPERATION address: INVITEL Zrt. address: H-2040 Budaors address: Edison utca 4. e-mail: firstname.lastname@example.org admin-c: VINC1-RIPE tech-c: JS6489-RIPE tech-c: IOS2-RIPE nic-hdl: VINO2-RIPE notify: email@example.com abuse-mailbox: firstname.lastname@example.org mnt-by: AS12301-MNT created: 2001-12-12T11,17,58Z last-modified: 2016-04-01T21,35,16Z source: RIPE route6: 2001,1aa0,,/29 descr: Invitel origin: AS12301 mnt-by: AS12301-MNT created: 2013-10-14T14,15,26Z last-modified: 2013-10-14T14,15,26Z 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.