inet6num: 2a02,dd80,,/29 netname: SE-VEAB-20121106 country: SE org: ORG-VEA4-RIPE admin-c: HL1836-RIPE tech-c: HL1836-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: VAXJO-SE-MNT mnt-routes: IP-ONLY-MNT created: 2012-11-06T12,37,31Z last-modified: 2016-07-12T10,36,29Z source: RIPE organisation: ORG-VEA4-RIPE org-name: Wexnet AB org-type: LIR address: Kvarnvagen 35 address: 352 41 address: VAXJO address: SWEDEN phone: +46470703320 fax-no: +4647014335 e-mail: firstname.lastname@example.org admin-c: ER326-RIPE admin-c: HL1836-RIPE admin-c: MB41991-RIPE abuse-c: WA1061-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: VAXJO-SE-MNT abuse-mailbox: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: VAXJO-SE-MNT created: 2004-04-17T12,05,21Z last-modified: 2016-07-14T13,25,37Z source: RIPE person: Hakan Larsson address: Vaxjo Energi AB Box 497 351 06 VAXJO mnt-by: VAXJO-SE-MNT e-mail: firstname.lastname@example.org phone: +46 708255322 nic-hdl: HL1836-RIPE created: 2008-02-20T14,54,11Z last-modified: 2008-04-30T12,36,14Z source: RIPE route6: 2a02,dd80,,/29 descr: IP-ONLY origin: AS12552 mnt-by: IP-ONLY-MNT created: 2013-03-12T15,02,31Z last-modified: 2013-03-12T15,02,31Z 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.